When -Xbootclasspath/a is included to assist with the loading of plugin jars the Notes client reads the value but ignores it. The log is receiving a long list of errors for unresolved classes. These classes would be resolved if this property was read and accepted by the client. I am using standard Eclipse syntax for this property, -Xbootclasspath/a:[drive]:[/folderpath/;[drive:/folderpath/filename.jar. I also tried the Xboot classpath with /p and without. Has anyone modified or added -Xbootclasspath to the Notes 8.5 rcplauncher properties and got it to work? if so, where was this property entered and how was the syntax for it?