I've found that copying the branches with activities in them causes problems.  I've resorted to dropping in new branches and then copying the activities.  Not sure if this will help, but in a small workflow this has been the easiest and fastest thing for me to do.

I was able to recreate this and was able to narrow it down to copying of a for each value action from one workflow to another (after copying I did modify the properties of the "for each value" to work with the workflow it was copied into).

Failed to publish workflow 'Alchemy Import - Individual Insurance': An error occurred while saving the workflow 'Alchemy Import - Individual Insurance'. [0343-WF1] [0411-WF0]
An error occurred while saving the workflow 'Alchemy Import - Individual Insurance'. [0343-WF1]
---Stack Trace---

   at Laserfiche.Workflow.ComponentModel.WorkflowSerializer.SaveWorkflow(IWorkflow workflow, XmlWriter writer, Boolean throwError, IWorkflowUI workflowUI)
   at Laserfiche.Workflow.Designer.PublishWorkflowAction.InnerPublish()
   at Laserfiche.Workflow.Designer.PublishWorkflowAction.InnerPublishWithProgress()
   at Laserfiche.Workflow.Designer.PublishWorkflowAction.Execute()

***

Object reference not set to an instance of an object.
---Stack Trace---

   at Laserfiche.Workflow.Activities.ForEach.ForEachValueActivityProxy.WriteProperties(XmlWriter writer)
   at Laserfiche.Workflow.ComponentModel.ActivityProxyBase.WriteXml(XmlWriter writer)
   at Laserfiche.Workflow.ComponentModel.CompositeActivityProxyEx.WriteCustomXmlElements(XmlWriter writer)
   at Laserfiche.Workflow.ComponentModel.CompositeActivityProxyEx.WriteCustomXmlElements(XmlWriter writer)
   at Laserfiche.Workflow.ComponentModel.CompositeActivityProxyEx.WriteCustomXmlElements(XmlWriter writer)
   at Laserfiche.Workflow.ComponentModel.CompositeActivityProxyEx.WriteCustomXmlElements(XmlWriter writer)
   at Laserfiche.Workflow.Activities.Proxies.SequentialWorkflowActivityProxy.WriteCustomXmlElements(XmlWriter writer)
   at Laserfiche.Workflow.ComponentModel.WorkflowBase.WriteXml(XmlWriter writer)
   at Laserfiche.Workflow.ComponentModel.WorkflowSerializer.WriteWorkflowToXml(XmlWriter writer, IWorkflow workflow)
   at Laserfiche.Workflow.ComponentModel.WorkflowSerializer.SaveWorkflow(IWorkflow workflow, XmlWriter writer, Boolean throwError, IWorkflowUI workflowUI)

***

There isn't enough information to troubleshoot. If you right-click on the help button, there should be an option to "copy diagnostic data" which might give us more information.

Hi Christo,

I just ran into this same issue ([0343-WF1]) which is how I found your post. Thankfully, I was able to find an easy fix: I saved a copy of the workflow to my desktop, closed the Designer, re-opened the Designer, opened the saved workflow on my desktop, and published without issue.

I hope the above steps will help you in the future!

~Rob