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Important notes below. MAC USERS ESPECIALLY, PLEASE READ below. SigScribe4 software for the design of MODRATEC interlocking Lever Frames. Available for Windows, Mac, and Linux operating Systems.

System Requirements

If you are already running an earlier version of SigScribe4, then your system is correctly configured. If you are downloading SigScribe4 for the first time, then please read the next two paragraphs.

For Windows users, you need 32-bit Java to be installed on your system. This may already exist. If it does not, then it can be downloaded free from the Java web site. Please note that systems such as Windows 7 will probably already have the 64-bit Java installed, but SigScribe4 is a 32-bit application and will not run under 64-bit Java. It is perfectly safe to install both the 32- and 64-bit Java on your machine.

For users of Mac 10.8 or later versions, you will need to ensure that security settings are correct. In the System Preferences page for Security & Privacy, and under the General tab, ensure that "Allow applications downloaded from:" is set to "Anywhere".

Further, for users of Mac Sierra, or later versions, please follow this link so that you are able to use SigScribe4 on your computer.


Your ownership of SigScribe4 is registered so that we can advise you of the availability of upgrades or security issues.


SigScribe4 comes with full documentation which includes both a simple and an advanced Tutorial to guide you through the design process. Any questions or difficulties can be posted on the 'Guest Lounge' forum for resolution. Email support is also available. If you are struggling with a design that you would like to turn into a working Lever Frame, please send us your SigScribe4 file (???.ss4) attached to an email and we will be happy to suggest a solution for you. Give as much detail as possible in your email about what you wish to achieve in your design.

The current version is 1.2.8 dated 30 Dec 2011.

FREE Download

Simply select your operating system then add SigScribe4 to your shopping cart. Look for the Download link at the end of the checkout process.

  • Model: SS4

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