µVISION: Error: Encountered an improper argument

Information in this knowledgebase article applies to:

• MDK v5.x

SYMPTOM

Under some circumstances, an error dialog with the text Encountered an improper argument might show up when you exit a debug session. If this happens, µVision needs to be terminated with the Windows Task Manager. In most cases, customers with Asian Windows versions are affected by this issue when Asian characters are used in the project path.

CAUSE

The µVision 5 debugger is currently not able to process DWARF debug information which contains folder or file names with UTF-8 characters.

RESOLUTION

Use only ASCII characters in the folder and file names of your project and all your source files and libraries.

SEE ALSO

• Refer to µVision: Error: Encountered an improper argument

Last Reviewed: Thursday, January 7, 2021