we have two server, one is R2 2008 64bit and the other is just 200864bit that we cant update.   Just says install pending and then after about 1-2 day that disappears.  I have tried about 5 times to do the installs and same problem.  Done reboots, same problem.  I dont even get those errors that you are having.  We have placed as support call but its been a week since they referred it to a specialist.   Not sure if anyone is experiencing issues with upgrading to BUDR 4.

Do you have AV on the servers.  I had the same thing happen on my box.  I just said install pending for an hour.  I turned off AV and then immediately saw the MSI installer start running.

I disabled av on the server and still got the error.

gdoubinin, does your 2 servers have clustering services installed?  We havent had any luck installing acronis on servers with this feature installed in 2008.

no just checked and no clustering, no errors.   UAC has been disabled.  I am not sure what support is doing , they said to logon and make sure it doesnt prompt which we did and still waiting for support.