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Bug
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    Resolution: Done
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P1: Critical
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    5.3.0
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    None
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    Mac OS X 10.9.3
 
Online and Offline 5.3 failed to install on Mac 10.9.3. Both installers fail at very end of installation with message
Cannot open file /opt/Qt/MaintenanceTool.app/Contents/MacOS/MaintenanceTool.new for writing: Unknown error
Here is MacOS permissions : drwxr-xr-x 2 root wheel 68B May 26 15:03 MacOS/
MacOS is empty.
When installing I changed from default user folder to /opt/Qt as I always installed it that way with previous version and I was prompted for Administrative password.