@Pete E the Screenshot unfortunately does not tell us if you are using a 64bit Windows system. Seeing a log file of a short test recording would give us more details.
@Squishyspud and
@Titanfall1967 you can use 7zip, which is free, or an updated version of WinRaR to open 7z files. Then you should see a VideoSourcPluginWrapper.dll and a folder (with more files). All have to be extracted into the corresponding folder:
32bit Windows System (64bit OBS will not be installed and cannot run)
C:\Program Files\OBS\plugins
64bit Windows System (what most people have)
32bit plugin for 32bit OBS: C:\Program Files (x86)\OBS\plugins
64bit plugin for 64bit OBS: C:\Program Files\OBS\plugins
When you run OBS in its titlebar it will show Open Broadcaster Software v0.657b - 64bit, if you are running the 64bit version. Make sure your anti-virus software does not remove files because of false negatives or being too agressive. And if nothing works, definitely also post a log file for us. It will show us something like:
Code:
02:20:02: -------------------------------
02:20:02: OBS Modules:
02:20:02: Base Address Module
02:20:02: 01230000 OBS.exe
02:20:02: 5DA30000 OBSApi.dll
02:20:02: 5D830000 DShowPlugin.dll
02:20:02: 5D800000 GraphicsCapture.dll
02:20:02: 5D620000 NoiseGate.dll
02:20:02: 62480000 PSVPlugin.dll
02:20:02: 5D600000 scenesw.dll
02:20:02: 62680000 VideoSourcePluginWrapper.dll
02:20:02: ------------------------------------------