X-Cart 5.2.3: upgrade issue fix for the users running MySQL v.5.6
Having announced the availability of X-cart 5.2.2, we saw several alike complaints: Cache rebuild fails on step 5, and the store would return an error. Investigating the problem we found out that it appears in those store, which run on servers with MySQL v.5.6. This problem is not in X-Cart core, but in the upgrade process itself, which remains incomplete.