Symptom:

Reason:

• XML data is invalid ( invalid structure of XML );
  • if some kind of server side error occurs, error or debug output may break valid xml data;
• invalid content type ( must be a text/xml for XML data );
• whitespaces before <?xml output;
• not escaped special characters, such as &, <, >;
• incorrect encoding of data.

Solution:

• use debug version of dhtmlxcommon.js , which will show extended error info;
• load the same URL in separate browser window - it will show reason and location of error;
• correctly escape special characters in XML data.

Symptom:

• js error with message as “dhtmlxArray is not defined” (FF), “mygrid.someMethod is not a function” (FF) or “Object expected” (IE).

Reason:

• not all necessary js files defined;
• order of js files incorrect.

Solution:

1. change order of js files as;
   • dhtmlxcommon.js;
   • dhtmlxgrid.js;
   • dhtmlxgridcell.js;
   • any other js files;
2. if some extended functionality used - please be sure that related extension included in the page;
3. as ultimate solution you can use “all-in-one” dhtmlx.js , which contains all possible functionality.

Symptom:

• “c is null” or “_childIndexes is null” error message.

Reason:

• API calls again not existing data was executed;
• incorrect parameters of methods ( beware that some methods of grid accepts row ID , while other may accept row Index );
• data in question not loaded yet ( data loading is async.).

Solution:

• check documentation for used methods, to be sure that parameters are correct;
• any data manipulation command must be executed only after data loading ( onXLE event or second parameter of grid.load command can be used to catch the necessary moment ).

Symptom:

• “stack overflow” or “out of memory” error.

Reason:

• grid in split mode can't change its configuration without full recreation, attempt to change config of grid in split mode will result in the above error.

Solution:

• don't change configuration of grid in split mode after splitAt executed;
• if you really need to change config - use grid.destructor() and create new grid in the same container with new configuration.