Eclipse Oxygen and Scala IDE 4.7 crashes with play framework 2.6.6 project in workspace

Question

There are two scenarios where my eclipse ide or scala ide (downloaded directly from scala site) crashes when play/maven project is in workspace.

Here's the issue:

Upon reboot of eclipse/scala ide it says: "An Error has occurred. See the log file /.metadata/.log"

Here's the content of that log file:

!ENTRY org.eclipse.mylyn.tasks.ui 4 0 2017-11-14 12:05:24.743
!MESSAGE FrameworkEvent ERROR
!STACK 0
org.osgi.framework.BundleException: Exception in org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin.stop() of bundle org.eclipse.mylyn.tasks.ui.
    at org.eclipse.osgi.internal.framework.BundleContextImpl.stop(BundleContextImpl.java:855)
    at org.eclipse.osgi.internal.framework.EquinoxBundle.stopWorker0(EquinoxBundle.java:947)
    at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.stopWorker(EquinoxBundle.java:314)
    at org.eclipse.osgi.container.Module.doStop(Module.java:636)
    at org.eclipse.osgi.container.Module.stop(Module.java:498)
    at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.decStartLevel(ModuleContainer.java:1675)
    at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.doContainerStartLevel(ModuleContainer.java:1594)
    at org.eclipse.osgi.container.SystemModule.stopWorker(SystemModule.java:270)
    at org.eclipse.osgi.internal.framework.EquinoxBundle$SystemBundle$EquinoxSystemModule.stopWorker(EquinoxBundle.java:147)
    at org.eclipse.osgi.container.Module.doStop(Module.java:636)
    at org.eclipse.osgi.container.Module.stop(Module.java:498)
    at org.eclipse.osgi.container.SystemModule.stop(SystemModule.java:202)
    at org.eclipse.osgi.internal.framework.EquinoxBundle$SystemBundle$EquinoxSystemModule$1.run(EquinoxBundle.java:165)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ExceptionInInitializerError
    at org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin.stop(TasksUiPlugin.java:816)
    at org.eclipse.osgi.internal.framework.BundleContextImpl$4.run(BundleContextImpl.java:835)
    at org.eclipse.osgi.internal.framework.BundleContextImpl$4.run(BundleContextImpl.java:1)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.eclipse.osgi.internal.framework.BundleContextImpl.stop(BundleContextImpl.java:828)
    ... 13 more
Caused by: org.eclipse.swt.SWTException: Invalid thread access
    at org.eclipse.swt.SWT.error(SWT.java:4533)
    at org.eclipse.swt.SWT.error(SWT.java:4448)
    at org.eclipse.swt.SWT.error(SWT.java:4419)
    at org.eclipse.swt.widgets.Display.error(Display.java:1089)
    at org.eclipse.swt.widgets.Display.createDisplay(Display.java:840)
    at org.eclipse.swt.widgets.Display.create(Display.java:823)
    at org.eclipse.swt.graphics.Device.<init>(Device.java:129)
    at org.eclipse.swt.widgets.Display.<init>(Display.java:722)
    at org.eclipse.swt.widgets.Display.<init>(Display.java:713)
    at org.eclipse.swt.widgets.Display.getDefault(Display.java:1419)
    at org.eclipse.mylyn.commons.ui.compatibility.CommonColors.<clinit>(CommonColors.java:28)
    ... 18 more
Root exception:
java.lang.ExceptionInInitializerError
    at org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin.stop(TasksUiPlugin.java:816)
    at org.eclipse.osgi.internal.framework.BundleContextImpl$4.run(BundleContextImpl.java:835)
    at org.eclipse.osgi.internal.framework.BundleContextImpl$4.run(BundleContextImpl.java:1)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.eclipse.osgi.internal.framework.BundleContextImpl.stop(BundleContextImpl.java:828)
    at org.eclipse.osgi.internal.framework.EquinoxBundle.stopWorker0(EquinoxBundle.java:947)
    at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.stopWorker(EquinoxBundle.java:314)
    at org.eclipse.osgi.container.Module.doStop(Module.java:636)
    at org.eclipse.osgi.container.Module.stop(Module.java:498)
    at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.decStartLevel(ModuleContainer.java:1675)
    at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.doContainerStartLevel(ModuleContainer.java:1594)
    at org.eclipse.osgi.container.SystemModule.stopWorker(SystemModule.java:270)
    at org.eclipse.osgi.internal.framework.EquinoxBundle$SystemBundle$EquinoxSystemModule.stopWorker(EquinoxBundle.java:147)
    at org.eclipse.osgi.container.Module.doStop(Module.java:636)
    at org.eclipse.osgi.container.Module.stop(Module.java:498)
    at org.eclipse.osgi.container.SystemModule.stop(SystemModule.java:202)
    at org.eclipse.osgi.internal.framework.EquinoxBundle$SystemBundle$EquinoxSystemModule$1.run(EquinoxBundle.java:165)
    at java.lang.Thread.run(Thread.java:745)
Caused by: org.eclipse.swt.SWTException: Invalid thread access
    at org.eclipse.swt.SWT.error(SWT.java:4533)
    at org.eclipse.swt.SWT.error(SWT.java:4448)
    at org.eclipse.swt.SWT.error(SWT.java:4419)
    at org.eclipse.swt.widgets.Display.error(Display.java:1089)
    at org.eclipse.swt.widgets.Display.createDisplay(Display.java:840)
    at org.eclipse.swt.widgets.Display.create(Display.java:823)
    at org.eclipse.swt.graphics.Device.<init>(Device.java:129)
    at org.eclipse.swt.widgets.Display.<init>(Display.java:722)
    at org.eclipse.swt.widgets.Display.<init>(Display.java:713)
    at org.eclipse.swt.widgets.Display.getDefault(Display.java:1419)
    at org.eclipse.mylyn.commons.ui.compatibility.CommonColors.<clinit>(CommonColors.java:28)
    ... 18 more

I tested it with both ScalaIDE and Eclipse

1) Install Scala IDE 4.7. import existing play/maven project. Notice bunch of scala complier errors in IDE Error Log. Restart and you see eclipse can't boot same workspace. It can boot other workspaces. Even if I remove all eclipse files (.settings, .classpath, .project) from play-maven project it crashes. Only soln is to remove .metadata from workspace and re-import project. But issue happens again after next restart.

2) Install Eclipse Oxygen. import existing play/maven project. Install Scala IDE 4.7 plugin which requires eclipse to restart. Upon restart it crashes for that workspace. Same workaround as 1.

PS - as I mentioned on top, eclipse/scala-id start up fine if I choose any other workspace which doesn't have play-maven project inside.

Let me know if I need to share any other detail.

Answer 1

I don't know what you mean by "install eclipse oxygen" but I think in case of this sort of problem is better to download Scala IDE from here http://scala-ide.org/download/sdk.html as zip and unpack it. Hope it helps