Cascade Server version 6.7.6 is a bug fix release and a recommended upgrade for clients in the 6.7 series. 

Issues Resolved

Bug

• [CSI-90] - Fix for some instances using SQL Server that had problems upgrading to 6.7.5
• [CSI-93] - No Block/No Format assignments lost on edit
• [CSI-120] - Security and UI problems related to the "Lock" pane

All Upgrades

Please follow every available release Upgrade Guide for every version you skipped during the upgrade.