What Could Be Causing This Error Message in Pspice?

[Saeed.z]

i have a problem in PSPICE

i created a simple circuit but after clicking on ' simulate ' , a message appears :

http://imageshack.us/a/img585/7118/erroru.gif

any help ? thanks

 

[Kholdstare]

ERC can possibly mean electrical rule check here. Are you breaking any common sense rule? check all your node names that they are different.

Also I havn't seen an error with this message before in pspice.