Can no longer import an sbt project: WARN - nal.AbstractExternalSystemTask - PROXY_LOGIN java.lang.NoSuchFieldError: PROXY_LOGIN

Just accepted upgrade to:

IntelliJ IDEA 2016.2
Build #IU-162.1121.32, built on July 9, 2016
Licensed to IntelliJ IDEA Evaluator
Expiration date: August 5, 2016
JRE: 1.8.0_76-release-b216 x86_64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o

Now I cannot import an sbt project.

When I click OK o the import Dialog, I see a modal with "Resolve error", PROXY_LOGIN , and to cap it all the show_log link does not work.

From the log file I see:

2016-07-13 10:50:10,270 [ 55290] WARN - nal.AbstractExternalSystemTask - PROXY_LOGIN
java.lang.NoSuchFieldError: PROXY_LOGIN
at org.jetbrains.sbt.project.SbtExternalSystemManager$.proxyOptionsFor(SbtExternalSystemManager.scala:154)
at org.jetbrains.sbt.project.SbtExternalSystemManager$.getVmOptions(SbtExternalSystemManager.scala:142)
at org.jetbrains.sbt.project.SbtExternalSystemManager$.executionSettingsFor(SbtExternalSystemManager.scala:83)
at org.jetbrains.sbt.project.SbtExternalSystemManager$$anonfun$getExecutionSettingsProvider$1.apply(SbtExternalSystemManager.scala:61)
at org.jetbrains.sbt.project.SbtExternalSystemManager$$anonfun$getExecutionSettingsProvider$1.apply(SbtExternalSystemManager.scala:61)
at org.jetbrains.sbt.package$$anon$3.fun(package.scala:31)
at org.jetbrains.sbt.package$$anon$3.fun(package.scala:30)
at com.intellij.openapi.externalSystem.util.ExternalSystemApiUtil.getExecutionSettings(ExternalSystemApiUtil.java:709)
at com.intellij.openapi.externalSystem.service.ExternalSystemFacadeManager.a(ExternalSystemFacadeManager.java:202)
at com.intellij.openapi.externalSystem.service.ExternalSystemFacadeManager.a(ExternalSystemFacadeManager.java:178)
at com.intellij.openapi.externalSystem.service.ExternalSystemFacadeManager.doInvoke(ExternalSystemFacadeManager.java:133)
at com.intellij.openapi.externalSystem.service.ExternalSystemFacadeManager$MyHandler.invoke(ExternalSystemFacadeManager.java:270)
at com.sun.proxy.$Proxy65.getResolver(Unknown Source)
at com.intellij.openapi.externalSystem.service.internal.ExternalSystemResolveProjectTask.doExecute(ExternalSystemResolveProjectTask.java:48)
at com.intellij.openapi.externalSystem.service.internal.AbstractExternalSystemTask.execute(AbstractExternalSystemTask.java:138)
at com.intellij.openapi.externalSystem.service.internal.AbstractExternalSystemTask.execute(AbstractExternalSystemTask.java:124)
at com.intellij.openapi.externalSystem.util.ExternalSystemUtil$3.execute(ExternalSystemUtil.java:415)
at com.intellij.openapi.externalSystem.util.ExternalSystemUtil$4.run(ExternalSystemUtil.java:485)
at com.intellij.openapi.progress.impl.CoreProgressManager$TaskRunnable.run(CoreProgressManager.java:635)
at com.intellij.openapi.progress.impl.CoreProgressManager$9.run(CoreProgressManager.java:384)
at com.intellij.openapi.progress.impl.CoreProgressManager$3.run(CoreProgressManager.java:170)
at com.intellij.openapi.progress.impl.CoreProgressManager.a(CoreProgressManager.java:494)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:443)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:54)
at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:155)
at com.intellij.openapi.application.impl.ApplicationImpl.a(ApplicationImpl.java:555)
at com.intellij.openapi.application.impl.ApplicationImpl$2.run(ApplicationImpl.java:308)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
2016-07-13 10:50:13,477 [ 58497] WARN - ij.ui.messages.SheetController - URL is null; HyperlinkEvent: javax.swing.event.HyperlinkEvent[source=javax.swing.JEditorPane[,120,45,284x39,layout=javax.swing.plaf.basic.BasicTextUI$UpdateHandler,alignmentX=0.0,alignmentY=0.0,border=javax.swing.plaf.basic.BasicBorders$MarginBorder@2e4f9ec9,flags=16777504,maximumSize=,minimumSize=,preferredSize=,caretColor=javax.swing.plaf.ColorUIResource[r=0,g=0,b=0],disabledTextColor=javax.swing.plaf.ColorUIResource[r=119,g=119,b=119],editable=false,margin=com.intellij.util.ui.JBInsets$JBInsetsUIResource[top=0,left=0,bottom=0,right=0],selectedTextColor=javax.swing.plaf.ColorUIResource[r=255,g=255,b=255],selectionColor=javax.swing.plaf.ColorUIResource[r=56,g=117,b=214],kit=javax.swing.text.html.HTMLEditorKit@2829f11b,typeHandlers={text/html=javax.swing.text.html.HTMLEditorKit@2829f11b}]]
2016-07-13 10:50:13,791 [ 58811] WARN - ij.ui.messages.SheetController - URL is null; HyperlinkEvent: javax.swing.event.HyperlinkEvent[source=javax.swing.JEditorPane[,120,45,284x39,layout=javax.swing.plaf.basic.BasicTextUI$UpdateHandler,alignmentX=0.0,alignmentY=0.0,border=javax.swing.plaf.basic.BasicBorders$MarginBorder@2e4f9ec9,flags=16777504,maximumSize=,minimumSize=,preferredSize=,caretColor=javax.swing.plaf.ColorUIResource[r=0,g=0,b=0],disabledTextColor=javax.swing.plaf.ColorUIResource[r=119,g=119,b=119],editable=false,margin=com.intellij.util.ui.JBInsets$JBInsetsUIResource[top=0,left=0,bottom=0,right=0],selectedTextColor=javax.swing.plaf.ColorUIResource[r=255,g=255,b=255],selectionColor=javax.swing.plaf.ColorUIResource[r=56,g=117,b=214],kit=javax.swing.text.html.HTMLEditorKit@2829f11b,typeHandlers={text/html=javax.swing.text.html.HTMLEditorKit@2829f11b}]]

Any help appreciated

I see