Revision creation fails silently if the Quartus II Project File (.qpf) is read-only

Description

Revision creation fails silently if the Quartus II Project File (.qpf) is read-only. This failure occurs if you attempt to create revisions with the GUI or with the Tcl API, and can cause failures in features that rely on the creation of revisions, such as Design Space Explorer (DSE).

Resolution

Ensure that the .qpf for your project is writable.