OK, "havoc" is a big word which isn't really justified.

I'm at present working through the Admin Studio Evaluation Guide (don't ask what this has to do with SharePoint [because the answer is "nothing at all"]!) which means I have installed the trial version of Admin Studio (a product that includes InstallShield) and which used to come from MacroVision (although I'm fairly sure it didn't start there) but now since the 1st of April comes from some other (new?) oddly-named company (begins with an "A" - accerta or something, nothing I've ever heard of). That change of ownership is so new that all the sites point to MacroVision pages and the documents still come from MacroVision.

All was going well. I set up (for a change) a VM using VM Fusion (roughly the Mac equivalent of VM Workstation) that had Windows 2003 Server installed and then installed the trial version of Admin Studio and was working through the examples in the Evaluation Guide.

I was about halfway through so I suspended the machine with Admin Studio open and at the page I was going to continue at this morning.

I restarted it this morning and started reading my e-mail on my work machine (I was using Admin Studio on my own Mac while waiting for a better work machine capable of running VM systems).

So, on the MacBook in that VM, the automatic upgrade of security fixes went into action and so I had to re-open my Admin Studio and find my place in the Evaluation Guide again.

Not too much of a problem you might think except that now there was a built-in "Start; wait a couple of seconds; delete" process going on caused it seemed later to be by DEP no longer liking that app.

So I tried getting rid of the two security fixes added today and re-booted. Now without me even trying to run Admin Studio, I was getting messages saying that Admin Studio wasn't being allowed to start !

I seem to have fixed it by re-running the Admin Studio installation; writing over the files but then saying Repair, but I've removed that Automatic Upgrades function (that I *never* use on my PCs so why did I set it in this VM?) and will try to remember to take at least a snapshot before adding any more security fixes to this VM. (I had of course taken a copy of the VM but that was before Admin Studio was installed with only the OS and security fixes [but not the yesterday ones!!].)