MB suddenly does not start - Portable version - windows 10.

[Fabio]

hello everyone, i closed MB 1 hour ago and suddenly it does not restart. i tried 2 PCs. Rebooted several times. It was working perfectly on both PCs. Portable version, on Windows 10.

the error log says
"2/02/2022 9:42:49 PM - 10.0.19042.0 - 3.4.7967.40161P - System.IO.InvalidDataException: Found invalid data while decoding.
   at #=zshRaqfw0JHf4wmTSIZJzguQ=.#=zyiBz7UU=(Byte[] #=zUrHMiLE=)
   at #=zshRaqfw0JHf4wmTSIZJzguQ=.#=zyiBz7UU=(String #=zCeFzNxs=)
   at #=zl5XMUBBlv0s5GMrXP1pGgjtWIDFJ..ctor(#=znOz1_1qVMkCJLv6WYg== #=zCeFzNxs=, Boolean #=zDeLadfj3aVI2XbC1rQ==, Byte[] #=zUrHMiLE=)
   at #=zUAsSgWBtyjZ8TMPYLo$g5uE=.#=zCRDb_ydseYke(#=znOz1_1qVMkCJLv6WYg== #=za0avqxCDF3mf, String #=zln0faRI=)
   at #=zUAsSgWBtyjZ8TMPYLo$g5uE=.#=z2wGK2KwpW48B()"

any help is appreciated.

Fabio

[psychoadept]

Do you remember any settings you might have changed before this happened?

[Fabio]

i only rated some tracks and updated the tags in a few songs

[Steven]

It looks like the musicbee3settings.ini file is corrupt
if you dont have a backup you should delete it and also the .bak file

[Fabio]

no luck. i have just tried it. I have now realised that MB is running, since i see it in the task manager, but i can't see the software interface 

[phred]

Terminate MB in task manager and restart it. If that still doesn't work, follow Steven's advice.

[Fabio]

it works! my mistake was that i had not deleted the .bak file when i (badly) followed Steven's advice

thank you very much again for your support