Can I upload a .fla file?

I’m wanting to put a pre-loader on my flash, but the software doesn’t seem to recognize the file.

FLA format is source file proprietary to Macromedia.

Perhaps you can export an SWF and import it into TBS.

When importing any swf to toonboom (studio, animate etc), just beware any effects as blur, glow, shadow, blending modes, bitmap textures. Toonboom calculates them in a different manner so it doesn’t import files with those.