Same problem here.
The error started yesterday when I tried to import a sprite directly to my layout by drag&droping from windows. A bug error poped up saying the sprite has problems with its collision poly.
<img src="http://s16.postimage.org/c12hr3l35/pointed_line.png" border="0" />
I tried to import this png from the animation editor and it looked to work but today, when I tried to open the caproj, this error appeared.
<img src="http://s11.postimage.org/4neaf0l4j/Untitled_1.jpg" border="0" />
Any ideas? Pless tell me I didn't loose my proyect.
Im working with the b99 on windows 7. Don't have a capx but I may attach the caproj if needed.
bye and thanks!