General Error message on upload of ZIP file

Firstly, hello all, i am new to this forum and really need someones help.
Trying to upload fibreglass template to my hoster and it comes back with error . File name pattern is invalid. The correct one is {colourgroup}_{picturename}_{menustyle}
Can anyone help with what to do to correct this so I can syccessfully upload template, thanks in advance Balders.

 

Some hosting companies do not let you upload files with Spaces or other characters in the name so if you have a page like /About Us.htm it will reject the upload. That happened to us and we renamed it to /AboutUs.htm which fixed it.