XLS ERROR from OAK!Merge:   Error while connecting to an import source.  Unexpected error from external database driver(1). This Error  is a new issue caused by a security update by Microsoft.  Microsoft is blocking the use of XLS files.  They were last used in 2003.  The current format is XLSX files,  and they work.  We are writing a new  OAK!Merge driver for XLS, XLSX, and XLSM which will be released in Jan 2018 for v20 of OAK!Merge.   v19 and earlier will no longer support XLS  files d...