rpasinstall binary is not working while using Cygwin

 Hi,

Binary 'rpasinstall' throwing error (mentioned below) when try to run from Cygwin (unix emulator for Windows) . I am on rpas 13.2 and my OS is Windows 7. Please suggest what to do. Below is error details.

"

-bash-4.1$ rpasinstall

Error occurred during initialization of VM

java.lang.Error: java.lang.ClassNotFoundException: com.retek.ride.RideClassLoader

        at java.lang.ClassLoader.initSystemClassLoader(Unknown Source)

        at java.lang.ClassLoader.getSystemClassLoader(Unknown Source)

Caused by: java.lang.ClassNotFoundException: com.retek.ride.RideClassLoader

        at java.net.URLClassLoader$1.run(Unknown Source)

        at java.security.AccessController.doPrivileged(Native Method)

"

Many Thanks.

Raj