VMTK library is not found and extensions are imcompatibe with slicer (MAC and Win, 4.13.0 built 2021-08-11 )

[jamesobutler (James Butler)]

That was an issue with yesterday’s Slicer version. Try again with today’s version.

See the following for more details

Unable to install extension - "Incompatible with Slicer r30110"

Thanks for the report, it is a side effect of Upcoming downtime for download.slicer.org and extension manager due to package server transition - #3 by jcfr, issue has been identified earlier today and I am currently working on this. For reference, this is now tracked in Installed extensions are not loaded · Issue #5786 · Slicer/Slicer · GitHub