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µVISION: DK - TM4C123G, IDE has Stopped Working

Information in this knowledgebase article applies to:

  • Keil MDK


With board DK - TM4C123G and when using Stellaris® In-Circuit Debug Interface (ICDI), if a user attempts to enter debug mode or download, µVision exits with the following error:

µVision IDE has stopped working

Earlier errors may include:

Stellaris ICDI Error
Could not initialize target device!
Please power cycle the board and try again
Error: Flash Download Failed


The driver lmidk-agdi.dll is no longer maintained (newest version is, so the issue cannot be fully investigated.


Remove JP1, called DEBUG OUT EN (for debugging an external device with the Stellaris® ICDI). Then user can enter debug mode.


Last Reviewed: Tuesday, January 26, 2021

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