HFSS error: Fast sweep field solution, process mr : subprocess "%3" died unexpectedly

[trichop]

HFSS error: Fast sweep field solution, process mr : subprocess "%3" died unexpectedly

[error] Fast sweep field solution, process mr : subprocess "%3" died unexpectedly.

I 've seen this error some times in my tests but I cannot figure out why.
Is anyone having a clue about this?

Thanks

PS I attached a simple test with such an error

 

[qiang]

Re: HFSS error

i meet the question too ,and if it is because the software is pirate

 

[cd79]

Re: HFSS error

I had this problem with v9 as well, but mine is not pirate.