Microsoft has verified this symptom.
If the total number of characters in the path of the file exceeds 255, the error message appears.
To avoid this symptom, the file name entered should not exceed 255 characters in total.
For more information, please refer to the following solution in Microsoft's technical support website.
Article ID: Q281675
Last Reviewed: August 4, 2001
Title: Error Message When You Use Run Command to Start a Program with a Long File Name.