this is a known (and annoying) bug in wine. Usually you could try a 'cabextract' on the executable, and the .msi file comes usually out (extracted), but here no msi file comes. >From a log i could see there should be a .msi file extraced somewhere in C:\\windows\\profiles\\yourname\\Application Data\\BreakPoint Software\\SIP Workbench v1\\install\\SIPWorkbench.msi but that didin't work-> no such file. If you really need install this application there's one work-around left: install with a very old wine-version ( i tried wine-0.9.32), and then it installs fine
