Here is a description of the other issue. It is about using brackets when you name a file. This is an explanation of one example that caused the error.
I posted a page here to discuss this issues in more detail.
On her PC the file name was "file1-.swf" . When she uploaded it to the wiki it changed to "File1-1-.swf"
That is done because wiki used the chars "[" and "]" for LINKS.
On her page she wrote "