<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"><base href="x-msg://646/"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div apple-content-edited="true">Hi Smita , </div><div apple-content-edited="true"><br></div><div apple-content-edited="true">I believe you're following the Material section of this <a href="http://wiki.opengatecollaboration.org/index.php/UsersGuide?">http://wiki.opengatecollaboration.org/index.php/UsersGuide?</a> </div><div apple-content-edited="true"><br></div><div apple-content-edited="true">The messages states that the file named MyMaterialDatabase.db can't be found in the current directory (where you execute the app). </div><div apple-content-edited="true">Do you actually have a file named MyMaterialDatabase.db?</div><div apple-content-edited="true">This file should be inspired (or even simply duplicated) from the GateMaterials.db file you can find in the examples ( see file attached). </div></body></html>