"Failed to load InRoads.3.1.dll" Everytime InRoads is launched

Question

Have this situation where I'm installing MicroStation v8i SS4 (08.11.09.832) and InRoads Group v8i (08.11.09.789) together on a new system. After installing successfully with no errors, I attempt to launch InRoads but receive an error message regarding the .NET framework (resolved by commenting out a command in the InRoads.3.1 file), and then loads a "Failed to load InRoads.3.1.dll" message every time it's launched. Re-installing the software, removing registry keys, testing another .dgn file (both project and sample data) present the same error. 
 Launching only on MicroStation has no errors, only when trying to run InRoads in conjuction with Microstation. Both are SS4, and this installation was on a brand new system, the only other Bentley apps on there were GEOPAK SS2 and GEOPAK SS4. 
 Attempted to re-install, clearing all InRoads files from C: drive, clearing regkeys, changing target path in InRoads shortcut, editing InRoads.3.1.dll to remove .NET framework errors, creating "Load Inroads.cfg" file has no effect. Applications tab does not display InRoads either, so wondering if somewhere the installation process is breaking or an additional step is needed. We are planning to eventually move to Microstation SS10 in the near future but not at the moment so we cannot install any SS10 versions. Wondering how I can resolve this error for SS4. 
 
 System is running Windows 10 20H2. All drivers up to date. Having this occur on a brand new system with no other apps besides, and a staff member's system running same versions.

Alejandro Olmos · Accepted Answer

So I'm getting two .NET framework errors, "Exception has been thrown by the target of invocation" and "Object reference is not set to an instance of an object" checking some of the other forums they all suggested checking the command line switch for both shortcuts, i checked that the target command showed the correct switch for both Microstation SS4 and InRoads SS4 shortcuts. I understand the errors but not sure how to pinpoint whether its a system issue or with the installation file/version im using. I mean I see the InRoads SS4 tools (Analysis & Reporting, OpenRoads help, etc.) but under Applications do not see InRoads Group 8iand no additional InRoads windows. Unless I'm looking at this wrong and it's already running.

inroads tools

.NET framework error 1 .NET framework error 2

caddcop · Answer

I am not sure if GEOPAK and InRoads can be installed on the same PC without problems if they are both using the same version of MicroStation. 
 When we went to add InRoads Ss4 to our installations, we needed to keep InRoads Ss2 for many legacy projects. 
 To accomplish this, we were told we had to install Power InRoads Ss4 as that was the only way to install both since Power InRoads does not use the installed MicroStation engine but uses its own separate installation. Eventually, we started only installing Power InRoads Ss2 and Ss4 (now Ss10) for anyone that was an InRoads user when setting up new PC's. 
 And when I attended some Bentley Forums (before COVID-19) and Open Roads Designer, the workshop PC's were setup with Power GEOPAK Ss4 and Power InRoads Ss4 to allow users to select their platform. I suspect that was due to a similar potential conflict between add-ons to MicroStation. 
 If you are on Select, I am pretty sure that everyone is officially licensing Open Roads Designer, which permits either GEOPAK or InRoads to be used at no extra charge, and I believe that includes the Power Platform versions. I would confirm that with your sales rep.

"Failed to load InRoads.3.1.dll" Everytime InRoads is launched

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