Are you sure you are using the latest version (1.3.1)? Because the G58 livery works fine for me. If you are using the latest version, I'd suggest re-installing this livery pack by:
1. Removing the 'livery-g58-klm' folder from your Community folder
2. Re-downloading this addon
3. Extracting the 'livery-g58-klm' folder from the downloaded .zip to your Community folder

If that still doesn't work, you can also download the G58 KLM livery separately from here: https://flightsim.to/file/503/klm-g58-baron just make sure to first delete the 'livery-g58-klm' folder from your Community folder before installing the new version (otherwise some broken files might still remain).

Hi, both your 1.3.1 (which was already installed) and the individual folder does not make any change. The KLM-livery remains white in both cases. Originally it was included via MSFS_Addon linker. I did delete first from MSFS Addon and whereever I could find G58 I deleted it also from the Community folder. I have restarted my PC and then installed G58 directly in Community Folder, with unfortunately no success -- the KLM version remains white. Meanwhile I will investigate further unless you have some suggestions.
I am using MSFS via Steam ! Till latest hotfix 1.13.17 I had no problems to see the KLM version -ofcourse flying was a bit difficult due WU3-.

One additional remark : G36 is okay; I see the KLM colors !

By the way : could it be that a recent download of the Asobo G58 may hamper due to the layout.json and manifest.json (both have a later date than yours) !

I also tested both the separate livery and the livery included in this pack and both work for me on 1.13.17 (also via Steam), so I'm not sure what could be causing the issue.

I know a few patches ago Asobo changed the logos on both the G58 and G36 and changed the texture files to .TIF.DDS files instead of .PNG.DDS files, you can check if you have the correct files by going to /livery-g58-klm/layout.json, the 19th line should be a .TIF.DDS file and not a .PNG.DDS file (and you should also have these files in SimObjects\Airplanes\Asobo_Baron_G58-KLM\TEXTURE.KLM).

This caused the livery to be completely white (like you described), but I have fixed this with the 1.3.1 version of this pack and version 1.3 of the G58 KLM livery (which I included in 1.3.1 of this pack).

Hi, this is the so called 19th line, correct ?
"path": "SimObjects/Airplanes/Asobo_Baron_G58-KLM/TEXTURE.KLM/BARONG58_AIRFRAME_ENGINE_ALBD.PNG.DDS.json".
This is copied out of the g58 KLM Baron layout.json file. I have used your livery pack 1.3.1 !
Once again G36 is okay !
Thanks in advance for your help/support !
Finally additional remark : your layout.json and manifest.json are in place since 29 dec 20 while simobject is dated 04 mar (obviously because of mu downlaod action 15 min ags.

Those dates are correct and shouldn't matter. Not sure if that is the 19th line, can you find the line that includes "BARON_AIRFRAME_LOGOS_ALBD" and tell me if it's either .PNG.DDS or .TIF.DDS? I just downloaded v1.3.1 of this pack and it includes: " "path": "SimObjects/Airplanes/Asobo_Baron_G58-KLM/TEXTURE.KLM/BARON_AIRFRAME_LOGOS_ALBD.TIF.DDS" "

R1NS3, yes this specific line is included in your layout.json. Please note I just downloaded again version 1.3.1. and I have only dropped G58 into community folder (next to g36).
And still no G58 in KLM colours; also note the thumbnail shows the G58 in KLM colour.
Note : The other aircrafts not interested yet for various reasons.

One last thing to check: do you also have the BARON_AIRFRAME_LOGOS_ALBD.TIF.DDS file in SimObjects\Airplanes\Asobo_Baron_G58-KLM\TEXTURE.KLM ? If you do, also make sure you don't have the old .PNG.DDS file for the logos, since those might conflict as well.

If there's still an issue, I'm honestly not sure what the problem could be, like I said, I'm not having the same issue so I'm not sure what could be causing it, all I know is that this was an issue after a patch from Asobo around late last year, but I fixed it.

What you have asked me to check, I confirm it is al there. Model G58 remains white, while G36 is okay. Let's stop searching for solution. You have provided me very good support, but my system does not allow to show the KLM G58. Thanks

Hi R1NS3, this is to inform you that since Sim Update 3 today I finally see/fly/view your KLM Baron again. What has happened I still do not know but I am very happy it is working again. FYI.

Unfortunately not, Asobo has to fix this and I doubt they ever will at this point

What liveries are not working for you? I realised I forgot to update the KLM G58 livery (just fixed this in 1.3.1), but all of the other liveries should still be working