Just downloaded 4.6 last night. We've been using 4.4.4 for a couple years with no install problems. During testing, I deployed FaxMan on 2008 Server (it already had 4.4.4 binaries on it, so it was an upgrade), and received a messagebox (with a caption of 'Printers') with this error:
Operation could not be completed (error 0x80360006a).
This occurred when I deployed FaxMan through a custom action inside our install (which has been working for 2 years with 4.4.4). Here's all the custom action does:
faxinstall.bat "Fax Server"
A command window pops up that says 'FaxInstall Batch file for FaxMan Version 4'. At this point, the messagebox pops up with the error. Once I hit 'OK', the install proceeds.