Cannot start Duplicati - "Error: UsageReporter failed"

Hi @rdeschipper, welcome to the forum!

By “the same error” do you mean the UsageReporter failed message?

If so, it’s likely been fixed in 2.0.2.18+:

If you don’t want to/can’t update I believe you can manually delete the dupl-usagereport-*files from your temp folder (there will probably be more than 50 of them).