Hello, I am now designing the layout and met a problem when I run divaDRC. The program terminated and some parts of error message are as follows: " Parsing drcExtractRules of "/cad/cds/IBM_PDK/bicmos7wl/V1.5.1.5DM/cdslib/bicmos7wl/divaDRC.rul"... \o function IBM_LayerCopy redefined \o error: No raw graphics layer exists in the tech file: DEGEN . \o error: 'DEGEN' is not a graphics layer. \o 80. dubiousData(("DEGEN" "drawing") "illegal shapes (DEGEN)") \o error: No raw graphics layer exists in the tech file: EV . \o error: 'EV' is not a graphics layer. \o 81. dubiousData(("EV" "drawing") "illegal shapes (EV)") \o error: No raw graphics layer exists in the tech file: OZ . \o error: 'OZ' is not a graphics layer. \o 83. dubiousData(("OZ" "drawing") "illegal shapes (OZ)") \o error: Unknown purpose "HD" found in geomGetPurpose(). \o 176. mimhd = geomGetPurpose("MIM" "HD" 0 25) \o error: No raw graphics layer exists in the tech file: OZ . \o error: geomGetPurpose() requires graphics database layer; layer OZ is not. \o 224. oz = geomGetPurpose("OZ" "drawing" 0 25) \o error: No raw graphics layer exists in the tech file: EV . \o error: geomGetPurpose() requires graphics database layer; layer EV is not. \o 225. ev = geomGetPurpose("EV" "drawing" 0 25) \o error: No raw graphics layer exists in the tech file: DEGEN . \o error: geomGetPurpose() requires graphics database layer; layer DEGEN is not. \o 226. degen = geomGetPurpose("DEGEN" "drawing" 0 25) \o error: No raw graphics layer exists in the tech file: VNCAP . \o error: geomGetPurpose() requires graphics database layer; layer VNCAP is not. \o error: Unknown purpose "count" found in geomGetPurpose(). \o 233. vncapcount = geomGetPurpose("VNCAP" "count" 0 25) \o error: No raw graphics layer exists in the tech file: VNCAP . \o error: geomGetPurpose() requires graphics database layer; layer VNCAP is not. \o error: Unknown purpose "parm" found in geomGetPurpose(). \o 234. vncapparm = geomGetPurpose("VNCAP" "parm" 0 25) \o error: Unknown purpose "COIL" found in geomGetPurpose(). \o 235. e1_coil = geomGetPurpose("E1" "COIL" 0 25) \o error: Unknown purpose "COIL" found in geomGetPurpose(). \o 236. m3_coil = geomGetPurpose("M3" "COIL" 0 25) \o error: Unknown purpose "COIL" found in geomGetPurpose(). \o 237. m4_coil = geomGetPurpose("M4" "COIL" 0 25) \o error: Unknown purpose "COIL" found in geomGetPurpose(). \o 238. mt_coil = geomGetPurpose("MT" "COIL" 0 25) \o Errors exist in the rules file "/cad/cds/IBM_PDK/bicmos7wl/V1.5.1.5DM/cdslib/bicmos7wl/divaDRC.rul". \o Verification program terminated. " Does that mean some other layers are also generated when I generate the layout? I can't find those unknown layers in the LSW window. And I also tried Assura 3.16, the same error message occurs. I use Cadence 5.141. The tech is IBM BiCMOS 7wl. Did anybody meet this before? Could someone help me with this? Thank you very much. Yfluo