If you get this message (especially after or while exporting to AMPRO) you have reached the limit of 260 characters for a path or fully qualified file in your Windows system.
Troubleshooting for this would include the following:
- Please check if you could shorten long run names
- Please check if you could place your XMUSE file elsewhere, where its pathname is shorter
You can find further information regarding the PathTooLongException provided by Microsoft here.