Cannot write cache file

[codeman]

Hello friends,

after update to 5.8 on windows 10 machine I cannot compile my project. It complains

Info: creating stash file \\......\.qmake.stash
C:/Qt/Qt5.8.0/5.8/msvc2015_64/mkspecs/features/toolchain.prf:55: Cannot write cache file \\........\.qmake.stash: Cannot create parent directory

Info: creating stash file \\......\.qmake.stash
C:/Qt/Qt5.8.0/5.8/msvc2015_64/mkspecs/features/toolchain.prf:55: Cannot write cache file \\........\.qmake.stash: Cannot create parent directory

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I dont understand whats wrong here?? Does anybody have some suggestions for me?