Internal Eror: Sub-system: DEV, File: /quartus/ddb/dev/dev_family_info_mgr_body.cpp, Line: 279

Description

You may see this internal error in the Quartus® II software if you install the initial device libraries after installing a device patch (dp).

Resolution

To avoid this error, reapply the device patch on top of the current Quartus II software installation. Reapplying the device patch updates all the necessary device libraries.