Signature not found

[albertoRamon]

v 0.6 in 6.2.8.2 (ubuntu 16.04)
Opening from file, or from extension manager or from SO, the same error in three cases
Is my version of LibreOffice? with the old works fine

(com.sun.star.lang.WrappedTargetRuntimeException) { { { Message = "Bad Zip File, ZipException: Zip END signature not found!", Context = (com.sun.star.uno.XInterface) @7fa19400e7c0 (ImplementationName = "com.sun.star.packages.comp.ZipPackage") } }, TargetException = (any) { (com.sun.star.packages.zip.ZipIOException) { { { Message = "Bad Zip File, ZipException: Zip END signature not found!", Context = (com.sun.star.uno.XInterface) @7fa19400e7c0 (ImplementationName = "com.sun.star.packages.comp.ZipPackage") } } } } }

[mnocci]

I have the exact same problem. I do really depend on this extension..
Both on Win10 and Debian10.
Do I need to downgrade? Which version did break the extension?
Many thanks

Version: 6.4.1.2
Build ID: 1:6.4.1-1~progress5+u1
CPU threads: 8; OS: Linux 5.5; UI render: default; VCL: gtk3;
Locale: de-CH (en_US.UTF-8); UI-Language: en-US
Calc: threaded

Version: 6.4.3.2 (x64)
Build-ID: 747b5d0ebf89f41c860ec2a39efd7cb15b54f2d8
CPU-Threads: 4; BS: Windows 10.0 Build 18363; UI-Render: Standard; VCL: win;
Gebietsschema: de-CH (de_CH); UI-Sprache: de-DE
Calc: threaded