For anyone who, after installing Zend Studio (under a 64-bit kernel), receives the message "no such file or directory" when starting the "ZendStudio" program, here is the explanation...
...Zend Studio currently only runs on 32-bit systems. See this entry in the Zend support forum:
http://www.zend.com/forums/index.php?t=msg&goto=10298
However, there is a way to start the program on 64-bit systems as well, without reinstalling the system. The "ia32-libs" provide the solution. Simply install the libraries through the package manager and reinstall Zend Studio. After that, Studio should run. At least, it worked perfectly for me.