The package path referenced an object that cannot be found

I'm getting the error below, just to preface...I do have all my package variables in the package level/scope, could there be another reason as to why this is occurring or other things i should try first?

dtexec /f "D:\SSISPackages\TEST_REPORT.dtsx" /set "\package.variables[User::ReportID].Properties.Value";"95E56F3A-DBEF-4FA1-B3E9-92A4BCB15E42"

Microsoft (R) SQL Server Execute Package Utility
Version 10.50.2500.0 for 64-bit
Copyright (C) Microsoft Corporation 2010. All rights reserved.
NULL
Started:  10:54:02 AM
Warning: 2012-09-20 10:54:02.72
   Code: 0x80012017
   Source: TEST_REPORT 
   Description: The package path referenced an object that cannot be found:
"\package.variables[User::ReportID].Properties.Value". This occurs when an 
attempt is made to resolve a package path to an object that cannot be found.
End Warning
DTExec: Could not set \package.variables[User::ReportID].Properties.Value 
value to 6A48D31E-3356-41C2-8BA7-A4C73869D5F1.
Started:  10:54:02 AM
Finished: 10:54:02 AM
Elapsed:  0.468 seconds
NULL