Problem Unable to load vessel module - what could cause?

[Zatnikitelman]

So I'm trying to make some updates to my old Prometheus Launch Vehicle, but it's not even showing up in Orbiter. It's not crashing, and the Orbiter.log only shows this:

**** Orbiter.log
Build Aug 30 2010 [v.100830]
Timer precision: 2.84443e-007 sec
Found 1 joystick(s)
Devices enumerated: 6
Devices accepted: 5
==> RGB Emulation
==> Direct3D HAL
==> Direct3D T&L HAL
==> Direct3D HAL (NVIDIA GeForce GTX 970)
==> Direct3D T&L HAL (NVIDIA GeForce GTX 970)
Module AtlantisConfig.dll .... [Build 100830, API 100830]
Module AtmConfig.dll ......... [Build 100830, API 100830]
Module DGConfigurator.dll .... [Build 100830, API 100830]
Module Framerate.dll ......... [Build 100830, API 100830]
Module Rcontrol.dll .......... [Build 100830, API 100830]
Module ScnEditor.dll ......... [Build 100830, API 100830]

**** Creating simulation session
DirectDraw interface OK
Direct3D interface OK
Graphics: Viewport: Fullscreen 1920 x 1080 x 32
Graphics: Hardware T&L capability: Yes
Graphics: Z-buffer depth: 32 bit
Graphics: Active lights supported: 8
Loading 15382 records from star database
Module Sun.dll ............... [Build 100830, API 100830]
VSOP87(E) Sun: Precision 1e-006, Terms 554/6634
Module Mercury.dll ........... [Build 100830, API 100830]
VSOP87(B) Mercury: Precision 1e-005, Terms 167/7123
Module Venus.dll ............. [Build 100830, API 100830]
Module VenusAtm2006.dll ...... [Build 100830, API 100830]
VSOP87(B) Venus: Precision 1e-005, Terms 79/1710
Module Earth.dll ............. [Build 100830, API 100830]
Module EarthAtmJ71G.dll ...... [Build 100830, API 100830]
VSOP87(B) Earth: Precision 1e-008, Terms 2564/2564
Module Moon.dll .............. [Build 100830, API 100830]
ELP82: Precision 1e-005, Terms 116/829
Module Mars.dll .............. [Build 100830, API 100830]
Module MarsAtm2006.dll ....... [Build 100830, API 100830]
VSOP87(B) Mars: Precision 1e-005, Terms 405/6400
Module Phobos.dll ............ [Build ******, API 060425]
Module Deimos.dll ............ [Build ******, API 060425]
Module Galsat.dll ............ [Build 100217, API 100215]
Module Jupiter.dll ........... [Build 100830, API 100830]
VSOP87(B) Jupiter: Precision 1e-006, Terms 1624/3625
Module Io.dll ................ [Build 100217, API 100215]
Module Europa.dll ............ [Build 100217, API 100215]
Module Ganymede.dll .......... [Build 100217, API 100215]
Module Callisto.dll .......... [Build 100217, API 100215]
Module Satsat.dll ............ [Build 100215, API 100212]
Module Saturn.dll ............ [Build 100830, API 100830]
VSOP87(B) Saturn: Precision 1e-006, Terms 2904/6365
Module Mimas.dll ............. [Build 100215, API 100212]
SATSAT Mimas: Terms 113
Module Enceladus.dll ......... [Build 100215, API 100212]
SATSAT Enceladus: Terms 33
Module Tethys.dll ............ [Build 100215, API 100212]
SATSAT Tethys: Terms 101
Module Dione.dll ............. [Build 100215, API 100212]
SATSAT Dione: Terms 59
Module Rhea.dll .............. [Build 100215, API 100212]
SATSAT Rhea: Terms 68
Module Titan.dll ............. [Build 100215, API 100212]
SATSAT Titan: Terms 100
Module Iapetus.dll ........... [Build 100215, API 100212]
SATSAT Iapetus: Terms 605
Module Uranus.dll ............ [Build 100830, API 100830]
VSOP87(B) Uranus: Precision 1e-006, Terms 1827/5269
Module Miranda.dll ........... [Build ******, API 060425]
Module Ariel.dll ............. [Build ******, API 060425]
Module Umbriel.dll ........... [Build ******, API 060425]
Module Titania.dll ........... [Build ******, API 060425]
Module Oberon.dll ............ [Build ******, API 060425]
Module Neptune.dll ........... [Build 100830, API 100830]
VSOP87(B) Neptune: Precision 1e-006, Terms 391/2024
Finished initialising world
---------------------------------------------------------------
>>> ERROR: Could not load vessel module: Prometheus
>>> [Vessel::LoadModule | .\Vessel.cpp | 5442]
---------------------------------------------------------------
Finished initialising status
Finished initialising camera
Finished initialising panels
Finished setting up render state
---------------------------------------------------------------
>>> ERROR: Could not load vessel module: Prometheus
>>> [Vessel::LoadModule | .\Vessel.cpp | 5442]
---------------------------------------------------------------
**** Closing simulation session

I haven't made any alterations to the code, I only moved the code to a new computer and created new projects around the old code. It's definitely building, Prometheus.dll is in the Modules directory and the config file is correct. The first loading was from a scenario file, the second was from the scenario editor in-sim.

Any ideas what this could be?

Thanks

 

[Majid]

I have seen issues like that when I didn't have the proper runtime components installed.

 

[Zatnikitelman]

Ok, I installed the VC++2013 redistributable packages and it still doesn't work. Any other ideas?

 

[meson800]

That sounds like when I haven't set up the linker correctly. Sometimes I would compile a DLL(for a non-vessel DLL) in the correct Modules/Plugin folder, but it wouldn't show up in the Orbiter Modules list.

I would check that Orbiter.lib and Orbitersdk.lib are added to the additional linker dependencies.

---------- Post added at 07:18 PM ---------- Previous post was at 07:16 PM ----------

I forgot how I got it to compile without a linking error though...

 

[Zatnikitelman]

I'm using Orbiter's property pages and I also just confirmed that both of those libs are in the linker.

 

[Zatnikitelman]

Well I know...something. This is an update of both Prometheus and my Orbiter Payload Handler so Prometheus is my test vessel. Unfortunately, it seems the newish OPH was the culprit. I've tried to convert OPH to using a .dll since I still can't figure out how to make .libs compile with different versions of VS (I know it's possible, Orbiter does it). I'm still not exactly sure how to make OPH work like this though, fortunately the conversion to .dll was fairly easy so reversing it if I have to should be fairly easy.