Error 1335 is caused by a corruption in the EQ7 installation files. If you purchased EQ7 as a download, please re-download the EQ7 installer by logging into your account on ElectricQuilt.com, then try installing EQ7 again:

https://support.electricquilt.com/articles/installuninstall-eq7/#from-a-download

If you purchased EQ7 on USB or CD please contact technical support.

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