help with this error in pls-cadd. help with this error in pls-cadd. lethalshot (Electrical) (OP) 7 Sep 17 03:54 I want to do a Line Optimization in psl-cadd, and after some steps I get the following error: "unable to open c:\users\xxx\appdata\roaming\pls\temp\pls-cadd\xxxx\allspans.txt Could you please help me? http://files.engineering.com/getfile.aspx?folder=32ca240c-6a51-4310-b40c-b6 RE: help with this error in pls-cadd. transmissiontowers (Structural) 10 Sep 17 17:07 I mostly use the structure programs, but the screen shot you posted is from PLS-CADD Lite which IIRC is only one structure and does not do Optimum spotting. Contact tech support at PLS and they will tell you the whole story. _____________________________________ I have been called "A storehouse of worthless information" many times.