Error in Sweep - Invalid Property Value

Hello community,

I have a problem with a file that was running fine without parametric sweep. I tried to implement the parameter sweep, but it seems I run into troubles.

Here is the error message :
""""
Error in sweep : the following feature has encountered a problem
The following feature has encountered a problem
- Feature : Time-dependent Solver 1 (sol3/t1)
- Error : Invalid property value
"""



It is strange because the calculation seems to run fine, but, when the output comes, there is just this problem, and no solution at all.

Under the solver 3 (which is the one dedicated to my time dependent problem, I get this :
"""
Invalid property value.
- Property: solnum
'Solution' is an array of integers.
- : ""
"""


Any ideas?