I seem to have got past that hurdle by restarting the QNAP. There may have been some junk left over from a previous aborted installation of the enterprise version.
But now I'm presented with a login dialogue box I can't get past. The instructions I've found say:
"In order to log on to the system, you have to point your browser to the URL where LogicalDOC is installed (this may be an address on your network). Once there, a login form is presented in which you have to enter your username, password…"
The first part of that is fine, achieved. The second part is totally unhelpful. What username, password? Is there a default I don't know about. Is this the user/pass to my QNAP (apparently not)? Where is this user/pass being checked? Locally? At LogicalDocs HQ?
A button below offers to help with an email if I've forgotten my password. I don't think I've FORGOTTEN it; it's just that I don't know what password we're talking about here? But I fill in the form, assuming user name "admin" and give my email address.
Any help at all with this would be very welcome.
OK, seems I was missing a setup step.
After restarting the LogicalDoc package a couple of times it presented me with a setup screen where I could establish a user name. That done it provided me with the default user/pass, which now seems to be working.