The message "No identification information is available in the security package" is the direct google translation...thank you for that.
I am assuming that you are seeing this error when attempting to either open the NP designer via the 'edit' button or when you attempt to 'preview' the report after the NP template editor has opened. Can you clarify 'when' you see this error exactly?
There may be a number of different reasons for this message:
the NPrinting connection associated with the report is has errored and must be reloaded successfully before the report can be generated in NPrinting. Check with your NP admin to ensure that the connection associated with the report is in a 'generated' state and not in an 'error' or other state.
the NP designer that you are using is not the same version as the NPrinting server. Check the programs and features on your computer to determine which version of designer is installed and verify this against the version of NPrinting server that you are accessing. Check "about" in your NP web server console or you may ask your NP administrator to verify your NP designer and NP server are the same version.
If the above does not help you, I suggest starting a support case so that this can be investigated more thoroughly.
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Thank you very much for your complete answer! Just for you to know I translated myself, nothing to be proud of, I know.
The error indeed occures after I use the "edit" button.
I guess it must be my own environment the problem because a collegue of mine can access the report and edit it. The version he uses is the same as mine. Do you think it can be because I have Office 365 instead of the classic version ? It's the ony difference we saw between our two computer so far...
Anyway I'll try your different solutions and maybe reinstall the Office and keep the post updated if I find a solution.