Travis build fix

desktop/build.gradle

@@ -13,7 +13,11 @@ ext.writeVersion = {
     def pfile = new File('../core/assets/version.properties')
     def props = new Properties()
 
+    try{
         pfile.createNewFile()
+    }catch (Exception e){}
+
+    if(pfile.exists()) {
 
         props.load(new FileInputStream(pfile))
 
@@ -26,6 +30,7 @@ ext.writeVersion = {
 
         props.store(pfile.newWriter(), "Autogenerated file. Do not modify.")
     }
+}
 
 ext.getPlatform = {
     if (project.hasProperty("platform")) {