Strange error message when trying to run Quba twice

[lhpitn]

[Window Title]
Error

[Main Instruction]
Exception

[Content]
ENOENT: no such file or directory, open 'C:\Program Files\Quba--source-shortcut=C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Quba.lnk'

[OK]

[jstaerk]

it's actually on purpose that it can not be run simulteanously (I dont remember the reason) but the error message is strange, agreed