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waldektroc · 01-23-2021, 04:55 PM

Please help with following issue.

Current version is Calibre POrtable 5.8.1.
I am not able to upgrade it to 5.9 or 5.10.1.

The installer recognizes it is an upgrade and unpacks files and then reports that ebook-viewer-portable.exe cannot be moved because it is not existing (Error Code 2).

Indeed, until I dismiss error message I can see a folder "_unpack_calibre_portable" in the current Calibre location. It has same folder tree as current Calibre but is missing three .exe files in main directory.

Windows 10, the only antivirus software is Windows Defender.

Defender does not report anything. I am mentioning it because I tried to outsmart the installer by making a copy of ebook-viewer-portable.exe file to unpack directory and it disappears immediately after copying it.

01-23-2021, 04:55 PM	#1
waldektroc Junior Member Posts: 4 Karma: 10 Join Date: Jan 2021 Device: Boox Nova 2	Unable to upgrade Calibre Portable Please help with following issue. Current version is Calibre POrtable 5.8.1. I am not able to upgrade it to 5.9 or 5.10.1. The installer recognizes it is an upgrade and unpacks files and then reports that ebook-viewer-portable.exe cannot be moved because it is not existing (Error Code 2). Indeed, until I dismiss error message I can see a folder "_unpack_calibre_portable" in the current Calibre location. It has same folder tree as current Calibre but is missing three .exe files in main directory. Windows 10, the only antivirus software is Windows Defender. Defender does not report anything. I am mentioning it because I tried to outsmart the installer by making a copy of ebook-viewer-portable.exe file to unpack directory and it disappears immediately after copying it.