The metadata could not be determined because every code path results in an error; see previous errors for some of these

I am migrating from SQL Server 2005 to SQL Server 2014 and one of the queries stopped working in SQL Server 2014:

select * 
from openrowset ('SQLOLEDB','Server=(local);TRUSTED_CONNECTION=YES;',' exec [MyDatabase].[dbo].[MyTable]')

I get the following error message:

Msg 11529, Level 16, State 1, Procedure sp_describe_first_result_set, Line 1
The metadata could not be determined because every code path results in an error; see previous errors for some of these.

Msg 4902, Level 16, State 1, Procedure sp_describe_first_result_set, Line 1
Cannot find the object "#MyTempTable" because it does not exist or you do not have permissions.

dbo.MyTable and #MyTempTable are not real names.

What could cause this error? Any help would be appreciated.

Thanks