[BlueOnyx:18836] Problem creating CSR on 5208R

[Christoph Schneeberger]

Hi,

When I click on "Create Signing Request" under "Security" | "SSL", I get 
consistently the following error on all my 5208R:

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An Error Was Encountered

The URI you submitted has disallowed characters.
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Browser URL shows "https://HOSTNAME.DOM.TLD:81/ssl/createCert&type=csr

Do others see this too, any hints on how to work around it?

Thanks in advance,
Christoph