After accidentally removing the 32 bit jdk, my Dev Studio on the AR Server stopped working. Whenever I tried to start it, I was getting the error message "failed to load the JNI shared library C:\Program Files\Java\jdk1.7.0_09\jre\bin" and was pointing to the 64 bit Java installed on the same machine. I installed the 32 bit version and update the environmental variables (Path, JRE_Home) but I am still getting the same error message. Normally, this shouldn't have been resolved by installing the 32 bit Java but it is still giving me the same error message.
This was resolved by adding the below entry in the destudio.ini file:
C:\Program Files (x86)\Java\jdk1.7.0_21\jre\bin