Message: Failed to make transparency mask for GIF

Cause

The GIF
file that was being imported or opened has been loaded correctly but it specifies that it requires transparency. When the transparency mask was being created, a problem was encountered and the process halted. Therefore, the GIF file will be displayed without the transparency mask. The reason for the failure is likely to be lack of memory.

What Can I Do?

Free up some memory by closing documents or quitting other applications and try loading the GIF file again.