Qt Maintenance Tool won't launch

Question

Launching the tool from the Start menu does nothing.

From the command line, I get the following error when running Qt's MaintenanceTool.exe --verbose:

"Cannot open file C:/Qt/MaintenanceTool.dat for reading: No such file or directory"

Anyone know how to fix it? I promise I didn't delete that file, though it is correct in saying it doesn't exist. I only have MaintenanceTool.ini. The installation log file doesn't mention any .dat files or give any errors at the end.

Edit: Seems to be a bug in Qt. I'd still like to know how to work around it though.

Answer 1

My solution was pretty simple. I renamed MaintenanceTool.exe.new and MaintenanceTool.dat.new to MaintenanceTool.exe and MaintenanceTool.dat. Problem solved!

Answer 2

This is indeed a bug, like you pointed out, and I just ran into it. Thanks for the bug report link. There's not a good workaround that I'm aware of within Qt; hopefully, they'll patch it soon.

However, on Windows, your machine will probably have a shadow copy of MaintenanceTool.dat, created when you ran Windows Update. To restore a shadow copy:

1. Right click on the C:\Qt folder (or wherever you installed Qt) and choose Properties.
2. Click the Previous Versions tab.
3. In reverse age order (newest first), open the various copies of the Qt folder, and see if they have MaintenanceTool.dat.

4. Once you find one, drag it into your real Qt folder alongside MaintenanceTool.exe, where it belongs.

The Maintenance Tool will complain about a "corrupt installation," but it seems to operate just fine.

Answer 3

1 stage: rename your QT folder (c:/qt) to any name, for examaple "qt_dump"
2 stage: reinstall qt online installer without any packages, deselect all checks
3 stage: rename your new qt installed folder for example "qt_working", and folder from stage 1 rename to "qt", and replace files from "qt_working" to "qt".