I got this command failure for external command for the first time from release 1.2.1. This never happened to me before with previous dynamo releases. Any ideas? [image]

@Hex_Ceballos , You might want to uninstall FINALCADCOLORIZER, if you have this installed. This aad-in has been causing issues during startup.

1.2.1 Command Failure for External Command

Sharad_Jaiswal December 2, 2016, 7:35am 3

This seems to be similar to Dynamo crashing at Startup, there might be some addin causing conflict.

Topic		Replies	Views
Dynamo Crash with Colorizer Addin Installed Revit	0	401	September 1, 2016
Dynamo crashing at Startup Revit startup , add-inconflict	17	3468	February 12, 2017
Dynamo startup failure FAQ	5	748	October 18, 2017
Can't start Dynamo, crashes on startup Packages	6	402	May 7, 2015
New Dynamo addin Packages	2	287	July 12, 2012