JNLP session error: "Could not parse launch file. Error at line 0." (4264217)

After upgrading to 2.5.916, when a user attempts to open a JNLP PSM session from a Linux, Unix or Mac host to target, they receive the following message:

"JNLParseException[ Could not parse launch file. Error at line 0.] at com.sun.javaws.jnl.XMLFormat.decode(Unknown Source) at com.sun.javaws.jnl.XMLFormat.parse(Unknown Source) at com.sun.javaws.jnl.LaunchDescFactory.buildDescriptor(Unknown Source) at com.sun.javaws.jnl.LaunchDescFactory.buildDescriptor(Unknown Source) at com.sun.javaws.Main.launchApp(Unknown Source) at com.sun.javaws.Main.continueInSecureThread(Unknown Source) at com.sun.javaws.Main.access$000(Unknown Source) at com.sun.javaws.Main$1.run(Unknown Source) at java.lang.Thread.run(Thread.java:745) Caused by: java.io.EOFException: encoding.error.not.xml at com.sun.deploy.xml.XMLEncoding.decodeXML(Unknown Source)" ... 9 more"