I have an eclipse plugin project with some custom views, but lately every view has an error in the runtime:
!ENTRY org.eclipse.e4.ui.workbench 2 0 2017-07-19 20:24:24.597
!MESSAGE Removing part descriptor with the 'com.test.ResourceChanges' id and the 'Resource Changes' description. Points to the invalid 'bundleclass://org.eclipse.ui.workbench/org.eclipse.ui.internal.e4.compatibility.CompatibilityView' class.
I compared the code to an almost empty example with the sample view, where the view can be shown, and all code looks good. Also, other projects for dependencies are working well.
On the other side, the sample view does not work in the project either.
An example plugin.xml entry:
<extension point="org.eclipse.ui.views">
<view allowMultiple="false" category="com.test.category" class="com.test.ResourceChangesView" icon="icons/Icon.png" id="com.test.ResourceChanges" name="Resource Changes" restorable="true">
</view>
<category id="com.test.category" name="Changes"></category>
</extension>
The views extend org.eclipse.ui.part.ViewPart, but as I said even an empty view will not get registered.