If you're writing your own CLEO scripts and encounter this error, you need to specify the required extensions using directives at the top of your script, like $USE CLEO+ or $USE newOpcodes . Available extensions include audio, bitwise, CLEO+, clipboard, file, imgui, ini, input, math, memory, NewOpcodes, and more.
The "new" .FLA files allow v2.00 players to have their cake and eat it too. They allow for: gta sa v200 cleo fla files new