problem with trial version (error when assigning roles)

problem with trial version (error when assigning roles)

Dear support,
 
we make an installation of latest trial version of password manager.
Imported users from AD, but we cant do 2nd step (assign roles)
We recieve simply error while processing request.
There was no any additional configuration. That is fresh system, with fresh installation of trial software.
What is wrong? How ti solve that problem?

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