AIR file damaged

OS X 10.8.3 2.7 GHz Intel Core i7

When trying to install an AIR application (WiMP), I get the following message:

The application could not be installed because the installer file is damaged.

Try obtaining a new installer file from the application author.

This is my log output:

5/1/13 10:40:27.641 AM Adobe AIR Application Installer[7947]: Application Installer begin with version 3.7.0.1530 on Mac OS 10.8.3 x86

5/1/13 10:40:27.641 AM Adobe AIR Application Installer[7947]: Commandline is: /Users/kriaase/Downloads/WiMP-2.2.2.build.201212141425.production.NO.air

5/1/13 10:40:27.641 AM Adobe AIR Application Installer[7947]: Installed runtime (3.7.0.1530) located at /Library/Frameworks/Adobe AIR.framework

5/1/13 10:40:28.232 AM Adobe AIR Application Installer[7947]: Unpackaging file:///Users/kriaase/Downloads/WiMP-2.2.2.build.201212141425.production.NO.air to /var/folders/7x/ndzywqnd1034hm1jvymzh73w0000gn/T/FlashTmp.VnicIX

5/1/13 10:40:28.331 AM Adobe AIR Application Installer[7947]: Got an unexpected fatal error while unpackaging: [ErrorEvent type="error" bubbles=false cancelable=false eventPhase=2 text="truncated or corrupt" errorID=0]

5/1/13 10:40:29.678 AM Adobe AIR Application Installer[7947]: Application Installer end with exit code 7