Hi Edward,

In your data folder there should be an ADSPROF.xxx (where xxx is your specific company data extension or selector). If you view the file (notepad), in the [ADS] section you should see the line "Currency=...somepath..." and this is where the system expects the currency files (mc*.LD4) that the company is using to be.

It may just be that you need to correct the path in some way or maybe restore the files from a backup to the correct path.

Pete