Here’s an annoying runtime error I just ran into using Wireshark Portable.
Looking at this Wireshark bug ID shows a possible solution:
1) copy WiresharkPortable\Other\PortableSource\WiresharkPortable.ini to
2) edit WiresharkPortable\WiresharkPortable.ini and change the line:
However, the INI file mentioned above already has the correct beta5.exe WinPcap line. However, just moving the INI file to the WiresharkPortable folder did the trick.