Can't get Cisco to work on my Mac?

I can not get Cisco to work on my Mac OSX 10.9.4

I found this link on someone else's post about this same issue

https://mega.co.nz/#!tlghxQoZ!I0VV1Th9pgiFMQagfG7LbHLvT8xT5uyKo8CrPAX5f9U

Several people said that it worked for them but the last is in 2013 so I'm not sure if its older Mac OS systems

I can down load and install fine but when I go to open it I get this error message

ERROR! cannot write to Info.plist, there are permission problems, or you are on a read-only volume.

This cannot run from within a read-only dmg file.

But when I go to "get info" the program says i have "read and write" permission?

I'm lost and new to Mac, can someone help me please?