I haven't had EECH on my main machine for a long while as I tend to keep it for CAD etc. I normally do any flying in the pit.
I thought I'd see what the latest update looked like before installing it on the pit, so went to install it on the main PC. I get a CTD. Error message is "Error creating d3d device 2: DDERR_INVALIDOBJECT"
It did use to run. My PC is: Intel i7 running at 2600 14Gb of ram. Radeon HD7700 series graphics card with 2 DVI outputs and 1Gb of DDR5 ram onboard. I have 2 HP E231 monitors connected but tried disabling the second one - that didn't help.
Operating system is Windows 7 64 bit. My copy of EECH is one from GOG that I purchased a long time ago. I am running it as administrator and have set the compatibility to Windows 7. Also tried XP (SP3). I do have ESET anti virus and Malwarebytes both running, but I've always had them on it.
I've tried the usual:
deleted the game.cfg file edited the eech.ini and set graphics back to basic.
have you copied files from pit machine, or installed from scratch?
some links https://SimHQ.com/forum/ubbthreads.php/ubb/showflat/Number/3835589/Searchpage/1/Main/378163/Words/%2BDDERR_INVALIDOBJECT/Search/true/what#Post3835589 https://SimHQ.com/forum/ubbthreads.php/ubb/showflat/Number/4328059/Searchpage/1/Main/410800/Words/%2BDDERR_INVALIDOBJECT/Search/true/re-problem-running-with-latest-install-of-eech-1-6#Post4328059
Would like to help but this actually might be linked to latest updates so folks releasing those should be able to help. I have not tried EECH in ages myself (busy at work and loads of other things happening).