Hi everyone,

I have a NetBeans Platform application using RELEASE82 currently. In order to 
upgrade to Apache NetBeans, I tried simply changing the release version in my 
pom file to RELEASE110. It compiled without issue, and when running it claims 
it’s using version “incubator-netbeans-release-404-on-20190319”. But it only 
shows the menu bar with “About” and “Preferences”, and the main window never 
appears. The log shows a few errors along the lines of 
“java.lang.RuntimeException: Uncompilable source code” and 
“java.lang.ClassNotFoundException: Will not load classes from default package”.

Is there any migration guide for this upgrade, or notes from anyone who has 
tried it? I’ve searched this list and the new wiki, but haven’t found anything 
yet. If nothing else, I’d like to know what I should generally expect. Should 
this be a seamless upgrade, or do I need to look into upgrading some Maven 
plugins, or are there code changes required in my modules? Any hints would be 
appreciated.

When I converted from Ant to Maven earlier this year, there were several guides 
that were invaluable, and I hope that they get preserved with the move to 
Apache:
http://wiki.netbeans.org/DevFaqMavenHowToMigrateFromANT
http://wiki.netbeans.org/Maven_NBM_comments

Best regards,
Konrad

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