I have created the circuit in .dwg format and saved it in \Autodesk\Acade 2013\Libs\jic125, but am not able to call customized circuit from circuit builder by using spread sheet (ACE_CIRCUIT_BUILDER.XLS). I have updated the spread sheet in sheet ACE_CIRCS in DWG_TAMPLATE column. Please help me solve this issue.
What is the exact name of the block? Verify that the block name matches.
You could try inserting the block it into the drawing before running CB. That would make sure its not a path issue but a CB issue.