| Return Value | Meaning |
| 0 | No error occurred |
| -1 | Call could not complete successfully / node does not exist. |
| -2 | Out of memory |
| -50 | One or more of the parameters to the method was wrong |
| -38 | Tried to add a child, and setMagicXTV was not called with the correct serial number. Returned from methods which add child nodes |
| Any other negative number | Mac system or Windows system error. This should be a rare occasion. Consult Mac or Win system documentation. |