You mention that the problems occured before around the time of an Access (Office?) upgrade, but you don't specify whether this is the case again now. Assuming that you haven't just upgraded either Monarch or Office, then you might check with your IT department whether the JET components have been changed.
From your message it sounds like all external lookups are failing, which is why it might be a system problem, but you might also check that the network isn't the issue. Have you tried changing the paths from drive letter mappings to UNC paths?
FWIW I had a similar problem yesterday with M10.5 and a set of files sent to me as an example of a process.. The look up indicated that there was a problem with the file (Did not exist being an option from the generic message but it could have been anything.)
I queried the sender about the potential for the file being restricted in some way but that seemed unlikely since it opened quite happily in Excel 2007 on my machine.
So with no obvious reason for the problem identified I made a direct copy of the spreadsheet to a new file, no changes other than it had been opened by my local Excel program and then saved. That new version works perfectly in the slightly as mine was set up. Obviously if I needed to I would open and save elsewhere and then copy the new file to where the non-working file should be replacing the original.
It would be interesting to know if the same process gives the same result in your case.
Thanks for the quick responses. The lookups are already linked using UNC paths so I can rule that out. Monarch and Access have not been recently upgraded so I'm not certain why this problem might be occurring now. Since it's my colleagues abroad being affected and not myself, it's quite difficult to ask for a quick test but I have asked about saving the lookups elsewhere. The JET components might be a more likely problem. If these had been altered, what action could be taken to fix this?
Once again, many thanks.
has some links.
The search page on these forums is limited to an index of four-letter words and above, which isn't very helpful when searching for JET, MOD, XML, PRN, PDF...
Data Kruncher has kindly provided us with a custom Google search on this site at:
which indexes the full text of the posts.