I tried all the patches to update to 1.06, the North American, the World, the French and the German and none would complete the update. I have a rogue copy?
I checked my version again and it is not 1.0.0.1, the FS Volition exe. says it is 1.03 version, as does the FS Vilition launcher, there is a FS 4.11.0.0 patchw32.dll file in the directory along with the other files:inst.isu, root.vp, FRED 1.03, FRED Designers Manual Word Doc., Players (empty) and DATA, 672 MB. Hmmmm.
I found an old site for Descent 1 and 2 (freespace 1 and 2?)
http://www.descent2.com/patches/d1/It says:
Update Descent 1 Full Version V1.4a to V1.5 (248 kB)
Update Descent 1 Full Version V1.0 to V1.4a (553 kB)
Update Descent 1 Full Version V1.0 to V1.4 (524 kB)
The V1.0 to V1.5 patch available on some sites is not recommendable: due to a bug in that patch it will disable music in level 8 and higher. If you want to patch from V1.0 to V1.5, patch to V1.4a first and then update to V1.5.
Some V1.0 and V1.4a of Descent 1 Full Version are not patchable: trying to do so will quit with an "Old file not found." error. Now, if you want to play D1_3Dfx or D1X you will need at least V1.4 and so have a problem. Do the following then: Start the patch as follows PATCH -IGNOREMISSING. This will patch the data files, so you can install and play D1_3Dfx and D1X. The normal executable DESCENTR.EXE however will not work anymore, but with D1_3Dfx/D1X you probably won't need that one anyway.