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E0D00154: internal error exception from Logic Editor

The program can be opened, however when an attempt to make a change in the program the logic editor crashes.
internal error exception

The ucmerr.log is showing an error on usage of msxml4.dll
HRESULT hr=m_pXMLDescriptor.CreateInstance(xml::CLSID_DOMDocument40);
  • This Dll is provide by Windows and should be registered.
Solution:
  • Open Command prompt.
  • Type C:\Windows\SysWOW64>regsvr32.exe msxml4.dll, press enter.
regsvr32
msxml4

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