Python Traceback most recent call last File CUsersAdministratorAppDataRoamingBlender FoundationBlender291scriptsaddonsauto_rig_pro-mastersrcauto_rig_smartpy line 458 in invoke selfexecutecontext

The error message "tuple index out of range" indicates that the program is trying to access an element of a tuple that does not exist. In this case, it seems to be related to the "rig_parent_collections" variable, which is being set by the "get_parent_collections" function.

One possible cause of this error is that the "rig" object does not have any collections assigned to it, which would result in an empty tuple when trying to access the first element of the "users_collection" property.

To fix this issue, you could try checking if the "rig.users_collection" property is not empty before attempting to access its first element. For example:

if rig.users_collection: rig_parent_collections = get_parent_collections(rig.users_collection[0]) else: print("Error: No collections assigned to rig."