Often times, when I open a LotusScript script library, I get a “Problem Occurred” dialog box that says:‘Collecting Backend Classes information’ has encountered a problem.
An internal error occurred during: “Collecting Backend Classes information”.
java.lang.NullPointerException
Does anyone know what this is about? Is it a problem I should be worried about? I haven’t noticed any ill effects (yet…).
Subject: The problem it causes…
I also get the same error message. The problem it seems to cause is that some of my agents won’t compile. It seems that if an agent uses a script library containing classes then sometimes the agent will not compile. Also, if the design of the script library is hidden (e.g. third party commercial products) then the agent will not compile EVER! In these cases I have to use an earlier version of Designer to compile the agents.
I had a look in my trace and the following are the exact error messages:
An internal error occurred during: “Collecting Backend Classes information”.
java.lang.NullPointerException
at org.eclipse.help.internal.server.WebappManager.getPort(Unknown Source)
at com.ibm.designer.domino.lscript.editor.LSEditor.getHelpPort(Unknown Source)
at com.ibm.designer.domino.lscript.editor.LSEditor.getPluginURL(Unknown Source)
at com.ibm.designer.domino.lscript.ScriptEditorPlugin.getImageURL(Unknown Source)
at com.ibm.designer.domino.lscript.model.impl.LSClass.doFormatLSDocContents(Unknown Source)
at com.ibm.designer.domino.lscript.model.impl.LSClass.formatLSDocContents(Unknown Source)
at com.ibm.designer.domino.lscript.model.impl.AbstractLSElement.getLSDoc(Unknown Source)
at com.ibm.designer.domino.lscript.editor.contentAssist.BackendClassesCollector.doInvokeLSApiSession(Unknown Source)
at com.ibm.designer.domino.lscript.editor.contentAssist.BackendClassesCollector.access$1(Unknown Source)
at com.ibm.designer.domino.lscript.editor.contentAssist.BackendClassesCollector$1.run(Unknown Source)
at org.eclipse.core.internal.jobs.Worker.run(Unknown Source)
I’ve tried uninstalling and reinstalling Notes and Designer but this did not help.
If anyone has any idea how to fix this I would be very grateful!
Subject: Removed Symantec to correct
I have been able to get past the error by removing Symantec Corporate AV. I have not checked with Symantec yet to see if this is a known problem. Hope this helps.
Subject: Thanks, problem solved
We use McAfee in our company. I opened the VirusScan Console and disabled “Access Protection” and “On-Access Scanner”, then I reran the Notes/Designer/Admin 8.5.1 install program and selected the “repair” option.
Now when I open a LotusScript agent or script library I no longer get the error 
Subject: Same Problem - not completly solved
I’ve got the same problem with my Notes 8.5.1 installation. After I read this post, I stopped my Symantec Virus Scanner, repaired the installation and it worked indeed. But after restarting the Symantec Virus OnAccess Protection the problem came again… Any other hints?
Subject: Try updating your antivirus
We solved this problem by updating the settings in the antivirus so that it ignores activity by Notes Designer. It should still scan files, but ignores execution processes I guess.
Ed
Subject: Same problem but hardware related
This is very odd. I had the same problem. It seems to have been solved with a hardware fix - I have a Lenovo T60 and the battery died. I pulled the battery out and started getting this problem in my designer client - ‘Collecting Backend Classes information’ has encountered a problem. I put a new battery in my laptop and the error has gone away - I made no software changes.
8.5.1 client was running ok for about 2 weeks before the battery died. Battery was out for 1 week and the error happened consistently during that week. I’ve had no reoccurrance of the error since having the new battery intalled 3 days ago.
Subject: Clearing %temp% helped for me
I followed the following steps to solve this issue.
Closed All Notes
Killed Backend Notes Processes
Deleted all temporary files under %temp% (type %temp% in run and press enter)
Restart notes and open the agent in designer. No error reported.
This worked for me, i dont know if it will work for you guys.
Regards,
Garry Morera
Subject: We have same problem…
We have experienced the same problem on multiple XP Pro machines. Updated from 8.5 DDE to 8.5.1, then it started appearing on some agents. Recompile makes no difference. Any ideas?