Support / FAQ

Users of tNavigator are located all over the world and we are able to provide technical answers via our global support service.  Whatever time zone you are located in, there is someone ready to respond from one of our support and sales offices in North America, England, Scotland, Russia, Malaysia, UAE, Vietnam, China, India, Kazakhstan, Canada, Australia and Ghana.

We will arrange an onsite visit or webex with you if necessary.

We support via and phone: +1 855-432-2222 and +1 713-337-4175.

Getting started:


  • Question. There is a message issued: This model is being calculated by another instance of tNavigator. Opening by this instance may lead to unexpected results. Do you really want to proceed? What should I do?

    There is a special *.lock file, created by tNavigator in RESULTS folder each time the model is opened for calculation. This protects this model from spoiling the results by occasional model opening in two different tNavigator versions or from opening same model from network disk by different users. When the calcualtion is complete, and the model is closed, *.lock file is automatically deleted. If the model was closed abnormally (for example, computer power was switched off), the lock-file will stay in the RESULTS directory. If you are sure that this model is not opened anywhere else, press Yes in the dialogue, to continue work with the model.

    To avoid confusion, it”s better to use modes ViewResults/ViewGraphs when you are not going to calculate the model. In this case results stay unchanged and lock-file is not created.