Checking python : [ Ok ]
Steam: line 5: cd: /home/max/.PlayOnLinux/wineprefix/Steam/drive_c/Program Files/Steam/: No such file or directory
preloader: Warning: failed to reserve range 00000000-60000000
preloader: Warning: failed to reserve range 00000000-60000000
preloader: Warning: failed to reserve range 00000000-60000000
wine: could not load L"C:\\windows\\system32\\steam.exe": Modul nicht gefunden
Now i went to the folder /home/max/.PlayOnLinux/wineprefix/Steam/drive_c/ but there was no folder called "Program Files" instead steam was installed into an folder called "Programme".
It seems that Windows/wine or steam creates this folder only on Operating systems in german language.
I changed the name to "Program Files" and now steam works with playonlinux without any problems.
So if you can extend this script to search for the folder "Programme" and if found rename it to "Program Files" it will also work with the german versions.
I dont know if similiar problems happen with other languages too but if yes you now can ask the bug reporters to look wich folder is used and than fix the problem by automaticaly renameing it.