'ERROR [NET0011] Netlist failed or maybe unusable' in Pspice simulation

 Obviously that is not the problem, the warning was issued that the name was changed and the netlister moved on. In Capture use File>Archive Project to create a single file archive of you project and attach that if you want someone to take a look at the data.

 I am attaching my project here. Can u please check it and help? 

Thanks.

 I suspect that the main issue could be no 0 net, use the 0 symbol from the source library and not the GND symbol for PSpice designs. Also, since I guess that you are not using a Windows OS from around 2000, why not get the latest 16.6 Lite download and use that, a lot of "common PSpice design errors" are picked up without getting netlist errors like this. I have attached an archive in 16.6 format and a PDF of the resulting circuit, this does simulate. Also take a look at the Capture and PSpice users guides, these are inclluded with all new versions for reference. As a couple of examples, you can change the page size, your design on an A size sheet is pretty crammed, and "nets of the same name on the same page are automatically connected together", that will remove the need for the numerous VDC parts that you have in your original.

thanks a lot..i got the new orcad Lite 16.6 installed.The GND symbol was also an issue. So as u suggested i changed it and used the 0 symbol. But after creating 'New simulation profile' and running the simulation i got this error

ERROR -- EVALUATION VERSION analog Node limit (75 Nodes) Exceeded!

and the simulation was aborted. So i broke the circuit and took just 2 opamps and simulated. After doing this I din't get this error because the total components used were less than 60 and Node limit wasn't exceeded.
So is there any way in which I can get my entire circuit simulated (ie., total of 10 opamps involved in the circuit) without getting this error?