problem try every thing to install even up to destroy my other install,
if one year i find the fix i will post.
go to Dcs site bind key let starforce load up that seem to fix it.
--- Log file: D:\programsgames\DCS World 2 OpenAlpha\autoupdate_log.txt
=== Log opened UTC 2016-01-28 05:00:13
INFO : DCS_Updater/2.6.16.58 (Windows NT 6.2.9200; Win64; en-US)
INFO : cmdline: "D:\programsgames\DCS World 2 OpenAlpha\bin\DCS_updater.exe" --apply install MIG-21bis
STATUS: Initializing...
INFO : basedir: D:\programsgames\DCS World 2 OpenAlpha
INFO : sourcetag: nevada
INFO : dcs_variant.txt: openalpha
INFO : DCS/2.0.0.49135.73 (x86_64; EN; WORLD)
INFO : branch: openalpha
STATUS: Connecting to update servers...
INFO : Got reply from www.digitalcombatsimulator.com
INFO : Got reply from srv3.update.digitalcombatsimulator.com
STATUS: Verifying cached version info...
STATUS: Preparing to install MIG-21bis ...
ERROR: Unknown module MIG-21bis
=== Log closed.
=== Log opened UTC 2016-01-28 05:10:14
buy module MIG-21bis from steam
all install in D drive steam too.
work on 1.5
win 8.1
i-7 4.00ghz
16 gb ram
64 bit system
2 gtx 970 sli