DC Admin Offline
I assume that you are using special characters in your file names? I recommend to not do that. Could you provide a list of all the file names you are using for the resources in your map? I probably can't easily fix this issue but I can at least try to add proper error handling.
In general I highly recommend to use all lowercase alphanumeric characters for file names only. No spaces, no special characters except underscores. So only these:
abcdefghijklmnopqrstuvwxyz0123456789_
Also keep the names short and start with a letter, not with an underscore or number. This way you can efficiently minimize problems with handling your files on various systems.