I am having this issue too. I thought it had to do with my extensions, but it doesn’t seem that way. luckilly my project is using github so i can just revert changes.
It happens at different times for me, but it seems to be around the time I make a new variable. This time I made a new array and then it crashed.
Console text
Cannot set the dropdown’s value to an unavailable option. Block type: spritekind, Field name: MEMBER, Value: mushroom
doClassValidation_ @ main.js:7
Cannot set the dropdown’s value to an unavailable option. Block type: spritekind, Field name: MEMBER, Value: fire
doClassValidation_ @ main.js:7
Cannot set the dropdown’s value to an unavailable option. Block type: spritekind, Field name: MEMBER, Value: koopaGreen
doClassValidation_ @ main.js:7
Cannot set the dropdown’s value to an unavailable option. Block type: spritekind, Field name: MEMBER, Value: enemy_killer_sprite
doClassValidation_ @ main.js:7
Cannot set the dropdown’s value to an unavailable option. Block type: spritekind, Field name: MEMBER, Value: utility
doClassValidation_ @ main.js:7
3 Cannot set the dropdown’s value to an unavailable option. Block type: spritekind, Field name: MEMBER, Value: koopaGreen
doClassValidation_ @ main.js:7
Cannot set the dropdown’s value to an unavailable option. Block type: spritekind, Field name: MEMBER, Value: firebar
doClassValidation_ @ main.js:7
Cannot set the dropdown’s value to an unavailable option. Block type: spritekind, Field name: MEMBER, Value: enemy_killer_sprite
doClassValidation_ @ main.js:7
Cannot set the dropdown’s value to an unavailable option. Block type: spritekind, Field name: MEMBER, Value: SMW_Goomba
doClassValidation_ @ main.js:7
Cannot set the dropdown’s value to an unavailable option. Block type: spritekind, Field name: MEMBER, Value: flippedSMWgoomba
doClassValidation_ @ main.js:7
Cannot set the dropdown’s value to an unavailable option. Block type: spritekind, Field name: MEMBER, Value: SMW_Goomba
doClassValidation_ @ main.js:7
Cannot set the dropdown’s value to an unavailable option. Block type: spritekind, Field name: MEMBER, Value: OffScreenEnemy
doClassValidation_ @ main.js:7
Cannot set the dropdown’s value to an unavailable option. Block type: spritekind, Field name: MEMBER, Value: offScreenKoopaGreen
doClassValidation_ @ main.js:7
Cannot set the dropdown’s value to an unavailable option. Block type: spritekind, Field name: MEMBER, Value: koopaGreen
doClassValidation_ @ main.js:7
Cannot set the dropdown’s value to an unavailable option. Block type: spritekind, Field name: MEMBER, Value: bullet_off_screen
doClassValidation_ @ main.js:7
Cannot set the dropdown’s value to an unavailable option. Block type: spritekind, Field name: MEMBER, Value: bullet
doClassValidation_ @ main.js:7
Cannot set the dropdown’s value to an unavailable option. Block type: spritekind, Field name: MEMBER, Value: offscreenSMWgoomba
doClassValidation_ @ main.js:7
Cannot set the dropdown’s value to an unavailable option. Block type: spritekind, Field name: MEMBER, Value: SMW_Goomba
doClassValidation_ @ main.js:7
2 Cannot set the dropdown’s value to an unavailable option. Block type: spritekind, Field name: MEMBER, Value: utility
ignoring built in block: lists_length
error: main.ts(1,48): error TS2339: Property ‘koopaGreen’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(175,49): error TS2339: Property ‘boss’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(365,27): error TS2339: Property ‘OffScreenEnemy’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(469,27): error TS2339: Property ‘offScreenKoopaGreen’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(701,27): error TS2339: Property ‘firebar’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(730,27): error TS2339: Property ‘lavabubble’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(735,71): error TS2339: Property ‘boss’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(743,49): error TS2339: Property ‘SMW_Goomba’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(766,30): error TS2339: Property ‘koopaGreen’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(766,53): error TS2339: Property ‘koopaGreen’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1003,30): error TS2339: Property ‘SMW_Block’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1012,32): error TS2339: Property ‘display’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1282,32): error TS2339: Property ‘lavabubble’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1547,49): error TS2339: Property ‘koopaGreen’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1613,32): error TS2339: Property ‘display’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1616,28): error TS2339: Property ‘bullet’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1640,30): error TS2339: Property ‘enemy_killer_sprite’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1643,30): error TS2339: Property ‘enemy_killer_sprite’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1643,62): error TS2339: Property ‘koopaGreen’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1672,49): error TS2339: Property ‘fire’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1714,31): error TS2339: Property ‘utility’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1745,31): error TS2339: Property ‘utility’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1772,31): error TS2339: Property ‘utility’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1799,31): error TS2339: Property ‘utility’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1815,53): error TS2339: Property ‘koopaGreen’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1827,32): error TS2339: Property ‘mushroom’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1839,52): error TS2339: Property ‘utility’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1860,27): error TS2339: Property ‘utility’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1870,72): error TS2339: Property ‘bullet_off_screen’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1874,72): error TS2339: Property ‘offscreenSMWgoomba’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1885,30): error TS2339: Property ‘enemy_killer_sprite’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1885,62): error TS2339: Property ‘utility’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1889,53): error TS2339: Property ‘OffScreenEnemy’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1895,53): error TS2339: Property ‘offScreenKoopaGreen’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1898,39): error TS2339: Property ‘koopaGreen’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1901,53): error TS2339: Property ‘bullet_off_screen’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1904,39): error TS2339: Property ‘bullet’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1907,53): error TS2339: Property ‘offscreenSMWgoomba’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1910,39): error TS2339: Property ‘SMW_Goomba’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(1914,32): error TS2339: Property ‘koopaGreen’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(2143,49): error TS2339: Property ‘lavabubble’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(2267,23): error TS2339: Property ‘utility’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(2292,27): error TS2339: Property ‘utility’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(2319,27): error TS2339: Property ‘utility’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(2330,56): error TS2339: Property ‘boss’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(2342,49): error TS2339: Property ‘mushroom’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(2358,32): error TS2339: Property ‘koopaGreen’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(2425,27): error TS2339: Property ‘OffScreenEnemy’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(2529,27): error TS2339: Property ‘offScreenKoopaGreen’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(2907,32): error TS2339: Property ‘koopaGreen’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(2934,23): error TS2339: Property ‘enemy_killer_sprite’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(2943,32): error TS2339: Property ‘mushroom’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(2962,52): error TS2339: Property ‘koopaGreen’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(2968,52): error TS2339: Property ‘offScreenKoopaGreen’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(2971,52): error TS2339: Property ‘OffScreenEnemy’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(2974,52): error TS2339: Property ‘mushroom’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(2977,52): error TS2339: Property ‘firebar’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(2980,52): error TS2339: Property ‘utility’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(2983,52): error TS2339: Property ‘boss’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(2986,52): error TS2339: Property ‘lavabubble’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(2989,52): error TS2339: Property ‘fire’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(2997,49): error TS2339: Property ‘firebar’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(3003,32): error TS2339: Property ‘koopaGreen’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(3198,27): error TS2339: Property ‘OffScreenEnemy’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(3302,27): error TS2339: Property ‘offScreenKoopaGreen’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(3682,27): error TS2339: Property ‘utility’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(3745,27): error TS2339: Property ‘utility’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(3757,32): error TS2339: Property ‘mushroom’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(3760,32): error TS2339: Property ‘mushroom’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(3868,19): error TS2339: Property ‘display’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(3908,75): error TS2339: Property ‘mushroom’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(3913,60): error TS2339: Property ‘koopaGreen’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(3941,79): error TS2339: Property ‘mushroom’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(3968,35): error TS2339: Property ‘SMW_Block’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(3985,56): error TS2339: Property ‘koopaGreen’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(3991,56): error TS2339: Property ‘SMW_Goomba’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(3994,56): error TS2339: Property ‘firebar’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(4001,52): error TS2339: Property ‘lavabubble’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(4011,52): error TS2339: Property ‘boss’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(4021,27): error TS2339: Property ‘fire’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(4034,75): error TS2339: Property ‘bullet’ does not exist on type ‘typeof SpriteKind’.
error: main.ts(4055,31): error TS2339: Property ‘bullet’ does not exist on type ‘typeof SpriteKind’.