Issue
When attempting to open a catalog in 2020 Catalog Express you receive the following error: (ERR: 11) Invalid filename of Price Zones (Path to catalog\ZONE.BTR)
Solution
The following article on the 2020 Knowledge Center contains solutions for this issue:
https://knowledge.2020spaces.com/articles/en_US/Troubleshooting/2020-Catalog-Express-ERR-11