Prepar3D v2 Hotfix (2.5.12944.0)

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Postby Dag » Tue Mar 03, 2015 12:29 pm

Great update :-) Let's hope this issue is adressed next:


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Postby tony345 » Tue Mar 03, 2015 5:49 pm

Just for clarity, if installing by extracting from the zip file, the Academic 2.5.12944.0 Hotfix zip file contains 96 files...

59 of them go into the main Lockheed Martin\Prepar3D v2 folder overwriting the files of the same name.
36 of them go into the Prepar3d v2\gauges folder, again overwriting.
1 file goes into your Lockheed Martin\Prepar3D v2\ShadersHLSL folder and overwriting.


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Postby Vanwolfenstein » Tue Mar 03, 2015 11:43 pm

So far Flight 1 GTN 750 state current patch is not compatible with latest hotfix, otherwise. No issues.

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Postby mta00jtl » Wed Mar 04, 2015 1:50 am

So far Flight 1 GTN 750 state current patch is not compatible with latest hotfix, otherwise. No issues.

Actually, just had my question on this matter answer on the Orbx forums along with a link and it seems to be working:

(bullet.png Posted: 21 hours 60 minutes ago at 2:00am
The update for the GTN for the latest P3D hotfix 2 has been released.
As usual, redownload from the sales website and reinstall using the key.

Regardless of what the installer may say, it is not necessary to install the GTN PC Trainer when doing the update.)

SimForums Link


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Postby Vanwolfenstein » Wed Mar 04, 2015 10:52 am

Thanks for the heads up on the GTN 750!

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Postby Carl » Wed Mar 04, 2015 12:23 pm

This hotfix seems to have resolved a compatibility issue I had with terrain shadows and my GFX 760. I can now enable terrain shadows without any serious FPS drop. Before this hotfix, I was unable to use terrain shadows. Perhaps related to the small change in GPUTerrain.fx? [Note: problem didn't exist in v2.4 either]

I am experiencing intermittent graphical glitches that didn't exist before (not a show stopper). Also noticing that some objects (buildings, structures) appear to be be pounded into the ground more frequently (only roofs are visible). Autogen trees render correctly.

Photoscenery still doesn't render as good as it did in v2.4, but I don't use a whole lot of it.

@tony345 - You are correct.
MSI Meg ACE mobo - AMD 3800x CPU - 32gb RAM @ 3600 - ( 2) 1tb PCIe4 M.2s, (2) 1tb EVO SSDs - GTX1070 8gb OC GPU - single 32" monitor @ 2560x1440 - Win 10 Pro

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Postby degeus » Wed Mar 04, 2015 1:25 pm

Today I applied the hotfix. No when trying to swith to LOAD a flight, P3D crashes.
Piet de Geus

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Postby Nemex » Wed Mar 04, 2015 2:14 pm


thanks a lot for the Hotfix. Applied it today, works perfectly so far.

Keep up the good work!


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Postby Fervex » Wed Mar 04, 2015 2:54 pm

Great update :-) Let’s hope this issue is adressed next:


Same issue here. No silver reflection

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Postby Vavun » Thu Mar 05, 2015 2:05 am

During rain only I do not have the effect of wet asphalt?

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Postby Rider320 » Thu Mar 05, 2015 2:15 am


After installing 2.4/2.5 now unable to use P3D !

My computer is rigged with one Nvidia GTX650 Ti card (2 screens as one surround 1920×1080 screen + 1440×900 screen) and the integrated intel HD 4600 screen.

After patching, the computer kept crashing (“fatal error” displayed without further details when loading the start up flight) so I updated display drivers to the latest WHQL versions and also removed completly P3D so as to make a full clean reinstall.

Without the intel HD 4600 connected display on, P3D v2.4/2.5 is running smoothly!

Even with the GTX650 Ti connected display listed as primary on the setup window, as soon as the intel HD 4600 screen is connected, P3D is crashing !

Any idea to make P3D start and run ?


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Postby mas618 » Thu Mar 05, 2015 11:28 am

Any news on the full Installer? It's still .43 on my products page.

No rush of course;-)


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Postby regulate » Thu Mar 05, 2015 11:50 am

Same question. Has the full installer been updated with both patches?

Thanks for your efforts.

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Postby jostytosty » Thu Mar 05, 2015 4:58 pm

@Rider. If I remember correctly no program on Windows can run two different graphic drivers at the same time.... That is what you are trying to estabish. 1 NVidia driver and 1 Intel graphics driver. It won't go [neither can you run Radeon and NVidia at the same time]

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Postby Chazypax » Fri Mar 06, 2015 6:44 pm

I try to download the hotfix but it keeps telling me that I need to log in. I am already logged in? I have tried multiple times to log in and it won't download.

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