So some of my apps didn't work after installation.
So I tried some other versions, still the same error.

But actually, it should work...

I've found a workaround for this. (Thank you Matoking for the tip!)

What you need is LuckyPatcher (google for it)
Install LuckyPatcher, and run this.

Choose the application that doesn't work and select Uninstall (so basically, uninstall the application using LuckyPatcher)

After that, stop the Dalvik system (you can find a couple of those in the Warehouse or on Jolla Store)

Install the apk file again of the application that crashes upon start.

Start the dalvik system back again

This should do the trick!