I found out that DxD ( 040... PADS ) generates the HyperLynx file format version 2.1
DxD ( EE2007.5 flow ) generates the HyperLynx file format version 1.4 (not possible import back to DxD)
Does Mentor intend to correct it?
I can see this error in 2007.7.
Integration of the analysis tools and the DxD/Expedition flow is an important area for Mentor. It seems like this problem is easy enough to reproduce so I'll inform engineering of the issue and get a defect entered.
There may be a work around for you here if you are using CES. If you have CES, I would suggest exporting the net out of CES instead of DxD for now. Here you should be able to export out of CES, it will automatically open your FFS schematic, you can make changes to the schematic, and then the output from HyperLynx is a constraint template that you can then apply in CES (this is available off the Export menu in HyperLynx).
I was working a bit with customer support on tracking down the history with this issue and the good news is that it looks like it should be functioning correctly in EE2007.7.
Yanfeng, I'm not sure why you got an error in EE2007.7. Customer support did an audit of the feature and it seemed to be working correctly with their testcases.
If either of you would like to provide a testcase to me, please send me an email and we can work out logistics (email@example.com) to get engineering the data.
I see this issue in 2007.7, but the HL is 8.1 beta. I will check whether this issues in 2007.7 Update 4 with HL 8.0 Update3. If the issue continues, I will prepare the testcase for you.
Thnak your for your answer, Steve...