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Camtasia stops working windows 7 + .Net 4.7, and how to solve the problem

Abstract

Camtasia (TechSmith) 8.6 stop working on my Windows 7 and can not edit mp3 file on Windows 10. The problem on Windows 7 was caused by .Net 4.7 update. I have my solution for Windows 7 + Camtasia 8.6.

Problem details

I realized that Camtasia 8.6.0 stops working at 2017-6-14, after a Windows update on my Windows 7 machine. I see the following window when I started Camtasia.

I have a problem with Camtasia 8.6.0 on Windows 10, that mp3 file are frequently truncated. I like the software, especially I like the caption editing capability and figure overlay for educational video editing. I usually try to use some free software, but this one is exceptionally good, so I bought the software a a few years ago. But I don't need the animation and transitions. So I didn't update the software to 9.x.

But this time, I cannot start Camtasia on Windows 7. I have a mp3 editing problem on Windows 10. So, I just tried the free trial version. However, on Windows 7, the installer even doesn't start.

Camtasia 8.6.0 crashes when start up 

On Windows 10, the mp3 truncated problem seems solved. But if it doesn't work on Windows 7, I have no motivation to upgrade it.

I checked Windows event log, then, I found the following error.

Log Name:      Application
Source:        .NET Runtime
Date:          6/14/2017 22:04:10
Event ID:      1026
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      hyamauchi-PC
Description:
Application: CamtasiaStudio.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.Runtime.InteropServices.COMException
   at MS.Win32.Penimc.UnsafeNativeMethods.CoCreateInstance(System.Guid ByRef, System.Object, Int32, System.Guid ByRef)
   at MS.Win32.Penimc.UnsafeNativeMethods.CreatePimcManager()
   at MS.Win32.Penimc.UnsafeNativeMethods..cctor()
Exception Info: System.TypeInitializationException
   at MS.Win32.Penimc.UnsafeNativeMethods.CreateResetEvent(IntPtr ByRef)
   at System.Windows.Input.PenThreadWorker..ctor()
   at System.Windows.Input.PenThreadPool.GetPenThreadForPenContextHelper(System.Windows.Input.PenContext)
   at System.Windows.Input.PenThreadPool.GetPenThreadForPenContext(System.Windows.Input.PenContext)
   at System.Windows.Input.StylusWisp.WispTabletDeviceCollection.UpdateTabletsImpl()
   at System.Windows.Input.StylusWisp.WispTabletDeviceCollection.UpdateTablets()
   at System.Windows.Input.StylusWisp.WispTabletDeviceCollection..ctor()
   at System.Windows.Input.StylusWisp.WispLogic.get_WispTabletDevices()
   at System.Windows.Input.StylusWisp.WispLogic.RegisterHwndForInput(System.Windows.Input.InputManager, System.Windows.PresentationSource)
   at System.Windows.Interop.HwndStylusInputProvider..ctor(System.Windows.Interop.HwndSource)
   at System.Windows.Interop.HwndSource.Initialize(System.Windows.Interop.HwndSourceParameters)
   at <Module>.WPFTimeline.initHwndSource(WPFTimeline*)
   at <Module>.WPFTimeline.initManagedObjects(WPFTimeline*)
   at <Module>.WPFTimeline.InitTimeline(WPFTimeline*, InitTimelineArgs*)
   at <Module>._wWinMainCRTStartup()

From this, I suspect .Net problem, I checked recent my software and windows update, and found I have .Net update.

Solution

I remove the .Net 4.7 from the Uninstall Program. Then I install the Camtasia 9 free trial version. But I think re-install 8.6 might work, too. Camtasia 9 free trial version first installs the .Net 4.6, which works fine. When the Windows update asked to update .Net, do not update 4.7, but you can get security update for .Net 4.6.

PS

After all this problem, I decided to update my Camtasia to version 9. Let's see I like the 9.x or not...

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