Upgrade to 4.3 from 4.2 and now problems

I upgraded to 4.3 from 4.2 and now when I try to open previous flows that did work Knime just kicks me out … see error log below?!? Can I revert back to 4.2 or have option to run 4.2 or 4.3? Thank you.

!SESSION 2021-04-19 06:01:38.425 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.8.0_252
java.vendor=AdoptOpenJDK
BootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=en_CA
Framework arguments: -keyring /Users/tracy/.eclipse_keyring -showlocation
Command-line arguments: -os macosx -ws cocoa -arch x86_64 -keyring /Users/tracy/.eclipse_keyring -showlocation

This is a continuation of log file /Users/tracy/knime-workspace/.metadata/.bak_0.log
Created Time: 2021-04-19 06:02:16.365

!ENTRY org.eclipse.jface 2 0 2021-04-19 06:02:16.365
!MESSAGE Keybinding conflicts occurred. They may interfere with normal accelerator operation.
!SUBENTRY 1 org.eclipse.jface 2 0 2021-04-19 06:02:16.365
!MESSAGE A conflict occurred for COMMAND+F:
Binding(COMMAND+F,
ParameterizedCommand(Command(org.eclipse.ui.edit.findReplace,Find and Replace,
Find and replace text,
Category(org.eclipse.ui.category.edit,Edit,null,true),
org.eclipse.ui.internal.WorkbenchHandlerServiceHandler@cf9a1f1,
,true),null),
org.eclipse.ui.defaultAcceleratorConfiguration,
org.eclipse.ui.contexts.window,system)
Binding(COMMAND+F,
ParameterizedCommand(Command(knime.commands.findnode,Find Node…,
Finds a Node in the workflow.,
Category(knime.command.category,KNIME Workflow Editor commands,Commands available for the workflow editor,true),
org.eclipse.ui.internal.WorkbenchHandlerServiceHandler@19710bd9,
,true),null),
org.eclipse.ui.defaultAcceleratorConfiguration,
org.eclipse.ui.contexts.window,system)
!SUBENTRY 1 org.eclipse.jface 2 0 2021-04-19 06:02:16.365
!MESSAGE A conflict occurred for COMMAND+G:
Binding(COMMAND+G,
ParameterizedCommand(Command(knime.commands.findnextnode,Find Next Node…,
Finds the next node in the workflow from the previous search results.,
Category(knime.command.category,KNIME Workflow Editor commands,Commands available for the workflow editor,true),
org.eclipse.ui.internal.WorkbenchHandlerServiceHandler@23c6556b,
,true),null),
org.eclipse.ui.defaultAcceleratorConfiguration,
org.eclipse.ui.contexts.window,system)
Binding(COMMAND+G,
ParameterizedCommand(Command(org.eclipse.jdt.ui.edit.text.java.search.declarations.in.workspace,Declaration in Workspace,
Search for declarations of the selected element in the workspace,
Category(org.eclipse.search.ui.category.search,Search,Search command category,true),
org.eclipse.ui.internal.WorkbenchHandlerServiceHandler@631990cc,
,true),null),
org.eclipse.ui.defaultAcceleratorConfiguration,
org.eclipse.ui.contexts.window,system)

!ENTRY org.eclipse.equinox.preferences 4 2 2021-04-19 06:02:17.576
!MESSAGE Problems occurred when invoking code from plug-in: “org.eclipse.equinox.preferences”.
!STACK 0
java.lang.ClassCastException: sun.reflect.generics.reflectiveObjects.TypeVariableImpl cannot be cast to java.lang.Class
at org.knime.core.data.DataCellSerializer.getCellClass(DataCellSerializer.java:133)
at org.knime.core.data.DataTypeRegistry.createSerializer(DataTypeRegistry.java:347)
at org.knime.core.data.DataTypeRegistry.lambda$9(DataTypeRegistry.java:335)
at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
at java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:647)
at java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:272)
at java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:647)
at java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:272)
at java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:485)
at

Does anyone have any ideas?

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