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Thanks for the feedback. That is my thinking too - but the "something else" if difficult to pin down as we have no major individual infrastructure changes that would impact this I can see especially as seeing across two sites with their own isolated servers / network bar the VPN links. The main variables I would speculatively look at is Antivirus (Sophos) where I have added the Promethean recommended websites from their network consideration techdoc or possible impact of a Windows Update / Windows 10 change post October 2023 but I would have thought there would be others out there and knowledge inside Promethean (whether acknowledged or not). We've been on a very old version for a long time before my time at the school. Another difficulty is replicating too between classes or getting machine access.

We have had this issue with 2.10 and also on machines that have had a clean install of 3.10 after full manual removal of 2.10 as per Promethean docs I've been provided. As the firefighting continues does anyone have recommendations what is a "stable" version with Windows 10, Sophos Endpoints.

We are seeing major issues with ActivInspire at the moment across two sites we are seeing a very high number of staff seeing their Flipchart files getting corrupted with the dreaded. "There was an error loading the page. It has been replaced by a blank page". We have been firefighting this and while majority have been on old version (mostly 2.10) we have found that even for staff where we have removed all traces of ActivInspire 2.10 and installed latest release 3.10 and corrupted files get restored from backup before corruption they still have issues. Costing us many hours and tears from some staff members. Wanted to see if any shared experience out there. We have tickets open with Promethean and our MSP also adding weight but told this is not a known "wider" issue I'm told by Promehtean. Nothing changes across our infrastructure from around mid to late Oct when this started and getting progressively worse. Not sure if any one has experiences of this in the past and any suggestions of what version can be run as a stable version as most of old posts I've found for anything similar and reverting to old v2.x version from older ones and dated a few years.