I recently upgraded from version 2.4 to 2.5 and encountered what I thought was a bug in the new version.
After the upgrade, the previous and next arrows were not showing up on some skins (my own skin). I sent a query and my skin too the folks at rainlendar and recieved this reply.
"Make sure your images have correct dimensions. For example if the image has 3 _frame_s its width (or height depending how the images are placed on the image) must be dividable with 3.
The 2.5 is more strict with the image sizes (the 2.4 just showed an error in the log). The Arrows.png has width of 61 which cannot be divided by 3. You need to resize it to 60."
This may be common knowledge and I just haven't picked it up as rainlendar isn't my "main squeeze", but I thought I'd pass it on anyway 
