TurboCAD LTE includes TurboCAD LTE and TurboCAD LTE Pro. You should note that this product was originally called DoubleCAD XT Pro. We offer free assistance troubleshooting unexpected software errors or behavior to owners of version 8, 7, or 6.

Why aren’t older versions supported?  The system requirements for older software are out of date, so the working environment cannot be duplicated by our technical support team. In most cases, issues are resolved by upgrading, and you are strongly encouraged to do so.  To request an upgrade quote, send an email to sales@imsidesign.com


Installation & Activation Help 

Watch this YouTube video on how to install your software: http://youtu.be/p4MiuYnqYs4

If you are still having trouble, and have confirmed your system meets the minimum system requirements, call 1.800.833.8082 (Press 2) or +1.415+483.8000 (Press 2), Monday through Friday between 9am and 6pm Eastern Time for assistance. You can also email support@imsidesign.com with your product name, version, and any other information that might help our support staff diagnose the problem, and we will respond during business hours.

User Guides

To access the online help use the following links.
TurboCAD LTE 8 User Guide


TurboCAD LTE 7 User Guide


TurboCAD LTE 6 User Guide


TurboCAD LTE 5 User Guide


TurboCAD LTE 4 User Guide



Updates and Patches

TurboCAD versions 6, 7, and 8 and above will automatically download the latest updates through the software. If you are having trouble with the auto update, please report to support@imsidesign.com. For earlier version updates, follow the links below. 

TurboCAD LTE v3.2 update


TurboCAD LTE Community Forums

As mentioned above, TurboCAD LTE was originally called DoubleCAD XT Pro. We have combined the user forums to give owners of both products maximum resources. Reach out to the community of TurboCAD LTE and DoubleCAD users and our development team online through these forums. Search topics to find answers to questions, or post questions for help. Visit forums.doublecad.com


Email and Telephone Technical Support

Our dedicated team available to assist you, but before contacting us, please be prepared to provide:

  •                      Your product name, version number, and operating system
  •                      Description of the problem including any error message you might be receiving
  •                      Any other information that might help us diagnose the problem

Call1.800.833.8082 (Press 3) or 1.415.483.8000 (Press 3) Monday through Friday between 8am and 5pm Pacific Time. If lines are busy, we recommend that you email support@imsidesign.com. We will respond during business hours.

Remember that telephone and email support is to help troubleshoot unexpected software errors or behavior. Please refer to the next section for software training.


Personalized Online TurboCAD training - $75/hr

IMSI/Design offers online, training for only $75 per hour. Our training sessions are done in a one-to-one meeting format, where we talk on the phone and share computers screens. Training is done via a combination of WebEx and either telephone or Skype. By utilizing WebEx, we can perform a live demonstration of TurboCAD from our site that you observe, or allow us to run the installed TurboCAD on your computer. 

Training is offered for the following Windows editions of TurboCAD: Designer, Deluxe, Pro, Pro Platinum, LTE, and LTE Pro.

New Users:  Typically, new users have a hard time getting started because they get overwhelmed by the many options in the program and struggle to learn basic functionality. Our introductory training session is designed to help you get over these initial hurdles.
In addition, by taking control of your desktop, we can ensure that your TurboCAD software has been correctly installed and that you get all the features that you have already paid for. We can see your TurboCAD drawings and suggest possible improvements and time-saving tips to achieve your specific goals. The session can be recorded for your own personal use to review later.

Experienced Users:  More experienced TurboCAD users can also use our training to learn and become more proficient with more advanced and sophisticated drafting, modeling and design tools. Topics include 3D surface and solid modeling, 2D Constraints, Rendering and Lighting, and architectural design.

To get started, call toll-free 800-833-8082 x8027 or email us at: training@imsidesign.com. Be sure to ask us about the product premiums we offer for multi-hour training purchases.


Self-Training Courses

A wide variety of self-training is available to TurboCAD users with subject matter from general CAD design to topics specific to your professional field. Visit our Training Page to learn more



As mentioned above, TurboCAD LTE was originally called DoubleCAD XT Pro. So you can helpful how to videos at http://www.youtube.com/doublecad as well as by searching DoubleCAD or TurboCAD LTE on YouTube.