I'm afraid it's an issue with Java. Apparently Oracle who are currently producing the updates have deemed being able to cut and paste into a chat room a security threat and have disabled it for this update. The only way to resolve it is to go back to the previous version of Java and hope Oracle decide to reverse this decision in the future
This explains it
Oracle, the developer of the Java programming language, released Java 6 Release 24 (Java 1.6.0_24) in February 2011 to remedy 21 vulnerabilities:
http://www.esecurityplanet.com/patches/article.php/3925146/Oracle-Updates-Java-for-21-Vulnerabilities.htm As part of this security release, it appears that the ability to copy & paste from a computer's clipboard into a Java environment has been deemed a security threat, and therefore disabled. ParaChat software is not preventing the copy/paste function -- the Java program on your computer is preventing it. Until which time Oracle responds to this requirement, you may decide to either not update your Java program to Release 24, or if you have already updated it, uninstall Java 6 Release 24, and reinstall Java 6 Release 23 (Java 1.6.0_23):
http://java.sun.com/products/archive/j2se/6u23/index.html (download and install the "JRE 6u23" file)
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