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23,010 Views 1 Reply Last post: Mar 26, 2012 2:02 PM by andrew_audova RSS
eburt Contributor 9 posts since
Mar 1, 2011
Currently Being Moderated

Mar 26, 2012 9:03 AM

Upgrading to PADS9.4: powerpcb.exe - system error - xf_Os.dll is missing

Hi There,


We are having an issue after upgrading one of our computers to PADS9.4 - the first problem we have seen in 4 or 5 computers now. When we go to try to start up the PADS tool after updating we get the following error:


powerpcb.exe - system error - xf_Os.dll is missing from your computer.


Can anyone let me know how to fix this please, or even what it means? It is the first time I am seeing this. I have searched high and low and have been able to find nothing on this issue.


We've run the MGC configurator, I believe that is what it is called, where we select 9.4 as our default version and have followed all the proper steps for install. From what I understand DxDesigner opens fine but we are unable to open the PADS layout tool. However, I am double checking this now.


Any help would be greatly appreciated.


Thanks in advance for your time



andrew_audova Mentor Graphics 51 posts since
Feb 23, 2009
Currently Being Moderated
Mar 26, 2012 2:02 PM in response to: eburt
Re: Upgrading to PADS9.4: powerpcb.exe - system error - xf_Os.dll is missing

Hi Ekko,


These sorts of errors are most often caused by problems with your environment variables or registry entries.


You could take a look through your environment variables  - both the user and system tables - and remove any references to older PADS versions. After that, re-run the Configurator.exe that is under the "win32" sub-directory in your PADS 9.4 installation. If that doesn't work, you should open a Service Request on SupportNet.


Also, here are some links to some Communities Docs that may come in handy:


How to switch between SDD Flow releases when they are installed to different target locations

Best practices for a successful PADS Flow installation

PADS Install and Licensing


Good luck!




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