Are you running the 2.11 update? You can get it here just download the 2.11 English. The multiSkin is optional but your PC should be able to run it.
Assuming you are running the 2.11 update check this first (these are the notes in the 2.11 release):
Note1: this update will bring *any* previous version up to 2.11. You do not need any previous patches at all.
Note2: You will need the latest DirectX to run 2.11.
You will get a missing .dll error if you do not. When you run the 2.11 self-installer it will point you to the Microsoft DirectX update page. Update to DirectX9.0c (June version). Unfortunately, there are multiple versions of 9.0c so if in any doubt, update.
Note3: The MultiSkin patch should go ON TOP OF Battle of Britain 2: Wings of Victory v2.11 Patch (English) OR Battle of Britain 2: Wings of Victory v2.11 Patch (International)
You should have a 256M gfx card to be sure to run without issues.
Note4: How to back up your existing settings from earlier BoBII updates.
Buddye's installation guide HERE-> http://www.a2asimulations.com/forum/vie
Back up your Bdg.txt and \savegame, \2dGauge, and \keyboard folders (these folders contain all your settings and joystick buttons)
Note5: If you have a low end system and experience a crash once into 3D, go to your bdg.txt file and set LANDSCAPE_TEXTURE_SIZE = 1024 (the default is 2048). This will reduce the landscape texture resolution by a factor of 4 and should help users with low system memory.
Note6: Windows Vista and Window 7 users. All Vista and Windows 7 users will need to apply the 'Vista/Windows 7 fix' to your desktop shortcut as a fresh 2.11 install will overwrite the previous shortcut.
Right click on shortcut and go to properties. Go to the compatibility tab. Check "disable desktop composition" and check the privilege level, run this program as an administrator.
Note7: Forcing VSync with ATI card
There is a known issue with the latest ATI cards and VSync. See http://www.a2asimulations.com/forum/vie
In short, you need to right click your ATI tray icon and enable through that (Wait for vertical refresh->Always on).
Note8: Framerates over densely populated areas of 3D objects
See the section later in this thread. Object rendering is not as efficient as we hope to make it in the future. Be prepared to check your Ground Object Density settings in densely populated urban areas. See below
Did you implement Note #6?
Is you DirectX 9c update to the latest? If unsure run the Microsoft Web installer here(it will update only what is needed):http://www.microsoft.com/downloads/deta ... laylang=en
If you are running a wide screen monitor check this thread:viewtopic.php?f=17&t=12695
Look into the BOBII folder and find the crashlog file. Open the crashlog file and cut and paste the first 20 lines into this thread for me to review.