Microspot Knowledge base - DWG Viewer http://www.microspot.co.uk/activekb en-us http://www.microspot.co.uk/activekb ActiveKB NX jason.batt@microspot.co.uk Fri, 08 May 2026 15:47:11 BST 20 Why am I getting an error -27 when opening a dwg file http://www.microspot.co.uk/activekb/questions/84/ Current version of DWG Viewer (1.6.6) supports up to autocad 2009 format. The file being opened is created by later version of auto cad (2010/2011 format).We are currently working on 2010/2011 for ... Del Chauhan Tue, 07 Jun 2011 13:00:49 BST Why do I get error -27 when attempting to read DWG file ? http://www.microspot.co.uk/activekb/questions/90/ Attempt is being made to open a dwg file format that is not currently supported in DWG Viewer.Version 1.6.6 support dwg 2007/2008/2009 (AC1021) format.Version 1.7 supports dwg 2010/2011/2012 (AC10 ... Del Chauhan Thu, 03 Nov 2011 12:11:16 GMT