HP Prime Virtual Calculator Error [Solved]

[mikerovak]

I can tell you exactly WHY this happened. See attached screen capture.

During the evolution of the HP Prime Virtual Calculator, something changed in the installer's use of registry entries, the codes changed for installed components. This most likely happened when a new version which was not compatible with the old version was installed without first uninstalling the old version.

Once that happened, both uninstallers could not clean up after themselves, they became confused. A side effect of this is that they way the new program is written, it cannot run in this confused registry state.

The registry is FULL of this crap, I was tempted to write a special program to search out and destroy all the duplicate entries instead of manually going in there and removing them one at a time.

As an added data point, installing the new version virtual calculator on a fresh machine has no issues, which is consistent with this explanation.

Cheers