Before you ask for help about a error somewhere (like you get PHP ERROR or something), it would really help us if you could tell us the information below in your post.

And also, if it is module specific, please clearly name the module.

Please put this in your post
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XOOPS Version: ?2.0.10 etc?
Site URL: if its public
PHP Version: use phpinfo(); to find out if you dont know / cPanel does show this btw
Web Server: IIS/Apache X.X
MySQL Version: 4.x, 3.x, etc

Error Message: Whatever message you get when the error occurs and also mention what file this error occurs on.
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And if a mod could sticky this...?