That doesn't work.  I tried e-filing an extension and I get an error message that "the schedule K-1 worksheet address is invalid.  The entry must begin with either a letter or a number".  When I checked on the K-1 I found it is a case of another phantom K-1 issue causing the error.  I deleted the K-1 worksheet and just as quick as it is gone the phantom returns.  I am having a priest stop by later to see if an exorcism does any good.  This is unbelievable nonsense just to file an extension.