Long path bug?

[_pusher_]

[*]Windows 7 x64
[*]Sandboxie version: 5.06 x64
[*]file: keygen.exe (but any file gets the same error)
[*]No antivirus running

The Messagebox given:
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Sandboxie Startaren
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Okänd kommandolinje parameter: env:00000000_SBIE_CURRENT_DIRECTORY="D:\downloads\EASEUS Partition Master 10 Professional + Technican Edition Incl Key - SceneDL\EaseUS.Partition.Master.v10.5.Multilingual.Incl.Keygen-TSZ" /env:=Refresh /elevate "D:\downloads\EASEUS Partition Master 10 Professional + Technican Edition Incl Key - SceneDL\EaseUS.Partition.Master.v10.5.Multilingual.Incl.Keygen-TSZ\Keygen.exe"
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OK
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Maybe its a known limitation that long pathnames are't allowed ?
"Okänd kommandolinje" is swedish for "Unknown commandline"