After upgrade to v100 FFportable not usable any more! Retrieve Bookmarks?

I used Firefox Portable (from PortableApps) a long time without problems.
I setup automatic updates.

So my FF updated automatically from v99 to v100.

When I started this new version an error popup appears;

Error: Platform version '100.0' is not compatible with
minVersion >= 99.0.1
maxVersion <= 99.0.1

and rejects to proceed with start.

This is a bug.
I guess its because FF does not understand a 3-digit version number

Ok, I expect that Firefox PortableApps will be fixed.

But there is another problem:

If I cannot start Firefox PortableApps v100 I cannot update to v100.fixed
And if I cannot update to v100.fixed then I cannot access all my previous bookmarks in Bookmark Manager.

My last backup is from 4 weeks ago.
In the meantime i collected approx 40 bookmarks.

How can I get them now?
v100 is corrupt and not updatable

Peter