If you’ve been working in Adobe After Effects and suddenly hit a wall with the Roto Brush tool , you’ve likely encountered a frustrating warning message. This issue, referenced by users in threads like “After Effects warning - can't use roto brush tool b... - 14035589,” typically stops your rotoscoping workflow dead in its tracks.

If all else fails, try ( Edit > Purge > All Memory & Disk Cache ). Corrupted cache files are known to cause tool failures across Adobe apps.

Have you encountered a different error number? Share your specific After Effects version and layer type in the comments (or community forums like the one referenced by 14035589) for more targeted help.