Ralf Figge

Yes, i change the ZIP engine from 1.90 to 1.92. Then i need to change a little bit of the code, so i can compile it under Embarcadero Delphi 10.3.1 Community Edition . At last i change the make to compile a 32 and 64 Bit version of Mozillabackup. (You see both Versions in the ZIP. ) Both Versions works here well .

Here is a new Testversion from MozBackup (1.5.2 Beta 2). (today compiled). It is make from the source from 1.5.2 Beta 1) @Tom Daniel : Test it. Maybe that your problem is away. If not, i need some more info about the Problem

Which Problems ? I am changing the source to compile it with Delphi10.3 (x86 and x64). There are many Comments in Czech, which I translate in english and german to understand where he has make what.