Sigbak "Invalid attachment frame"

[Frankel84]

Tim, thanks for your wonderful utility sigbak. Earlier this year it worked fine (although not so easy to install on Windows for an amateur like me), but using the same commands (export-database / export-messages), I nowget an error message "Invalid attachment frame".
What to do?
Thanks!

[tbvdm]

It looks like you have to update sigbak. Run the following the commands in the Cygwin terminal:

git -C sigbak pull
PKG_CONFIG_PATH=/usr/local/lib/pkgconfig make -C sigbak clean install

Then try exporting again.

[tbvdm]

I'm going to close this. If you still need help, feel free to let me know.