Problem with 9.0

[ptomic]

My Calibre was installed for years on network storage, and I was accessing from Win machine thru UNC (\\IP address\Calibre\calibre-portable.exe).
Also when I'm updating version, I'm updating from CMD: calibre-portable-installer-9.0.0.exe \\IP address\Calibre.
Usually, it recognize it as update, ask about that and finish everything.
This time, from 8.1.6 to 9.0, no question, only unpacking.
After finishing, I tried to start and get an error.

This application failed to start because no Qt platform plugin could be initialized. Reinstaling application may fix this problem.

Ok, let's try again. Same result.
Ok, let's try different approach, install on local drive, start. Works.
Backup Calibre settings on different location. Copy whole "new" Calibre folder to network location, restore Calibre settings. Not work. Same error.

Any advice?

P.S. Calibre Library is copied to 2 different locations, just for any case.

[kovidgoyal]

There were no changes to the portable installer in calibre 9. Did you select the wrong installation folder? As for your Qt error, possibly the updated Qt doesnt like it when its plugins are in UNC paths. Map your UNC path to a local drive letter and see if it helps.

[ptomic]

Originally Posted by kovidgoyal

Map your UNC path to a local drive letter and see if it helps.

It works with mapped drive.
Thank you.
One question, can local installation of Calibre (Win, MacOS, Linux) work with library that is on UNC?

P.S. I will change on all workstations now.

[kovidgoyal]

See https://manual.calibre-ebook.com/faq...rked-drive-nas

[ptomic]

Originally Posted by kovidgoyal

See https://manual.calibre-ebook.com/faq...rked-drive-nas

Thank you.