Cannot Install NetSlim Lite – Permission Error

Hello techyv!
I recently bought Wendell Odom's ICND1 & ICND2 Premium E-Books in a 50% off sale. Each book included Mindshare (demo) and NetSim Lite as a bonus.

Installation Failed. Possible resons may be: Installation files do not have ''execute" permission. User does not have right to write to the Destination folder. For MAC users: the installation folder and/or the destination folder have spaces.
For some reason, though I have been unsuccessful in installing these on my Mac. Please see the above image for the error message. Permissions have been set to read and write and I have ensured there are no spaces in the filename on the destination folder.
Thanks in advance.
