Failed to load PlayerSettings (internal index #0).

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I have two custom apps ConfocalVR and ExMicroVR. They both have been working fine on my WIndows 10 machine for over a year. I recently ran ConfocalVR and it worked perfectly. I then ran ExMicroVr and got the error “Failed to load PlayerSettings (internal index #0). Most likely data file is corrupted, or built with mismatching editor and platform support versions.”

The Unity log file said:
Mono path[0] = ‘C:/Program Files (x86)/ConfocalVRDistribution/ExMicroVR2.5_Data/Managed’
Mono config path = ‘C:/Program Files (x86)/ConfocalVRDistribution/MonoBleedingEdge/etc’
Invalid serialized file version. File: “C:/Program Files (x86)/ConfocalVRDistribution/ExMicroVR2.5_Data/globalgamemanagers”. Expected version: 2019.4.30f1. Actual version: 2019.4.29f1.
(Filename: Line: 1588)
Unknown error occurred while loading ‘C:/Program Files (x86)/ConfocalVRDistribution/ExMicroVR2.5_Data/globalgamemanagers’.
(Filename: Line: 209)
Failed to load PlayerSettings (internal index #0).
Most likely data file is corrupted, or built with mismatching
editor and platform support versions.
PlayerInitEngineNoGraphics settings: Failed to load PlayerSettings (internal index #0).
Most likely data file is corrupted, or built with mismatching
editor and platform support versions.

I reinstalled ExMicroVR and it works perfectly, HOWEVER, now ConfocalVR app gives this error…???

Here is the full error log:
Mono path[0] = ‘C:/Program Files (x86)/ConfocalVRDistribution/ConfocalVR3.3_Data/Managed’
Mono config path = ‘C:/Program Files (x86)/ConfocalVRDistribution/MonoBleedingEdge/etc’
Invalid serialized file version. File: “C:/Program Files (x86)/ConfocalVRDistribution/ConfocalVR3.3_Data/globalgamemanagers”. Expected version: 2019.4.29f1. Actual version: 2019.4.30f1.
(Filename: Line: 1588)
Unknown error occurred while loading ‘C:/Program Files (x86)/ConfocalVRDistribution/ConfocalVR3.3_Data/globalgamemanagers’.
(Filename: Line: 209)
Failed to load PlayerSettings (internal index #0).
Most likely data file is corrupted, or built with mismatching
editor and platform support versions.
PlayerInitEngineNoGraphics settings: Failed to load PlayerSettings (internal index #0).
Most likely data file is corrupted, or built with mismatching
editor and platform support versions.

I reinstalled ConfocalVR and it works perfectly, HOWEVER, now ExMicroVR app give this error…???

I used the Inno app builder in both cases.

Any idea what’s going on?

I’m experiencing the same issue with my 2 apps as well.

Did you figure out how to fix this?

I’m not an expert, but what seemed to work for me was to make sure that the two apps have different “package names”. See Project_Settings / Player / Other_Settings, then look down under Identification to see Package_Name. It seems this value has to be different in the two (or more) apps when you build. Note that (at least in Unity 2021.3.28f1) There is a toggle Override_Default_Package_Name that if off, the Editor atomatically constructs a Package_Name from the Company_Name and Product_Name that you provide at the very top of the Player settings. Good hunting!