for free. It provides most of the power of the professional version without the risk of viruses or legal trouble. or are you looking for to get started with NX 12?
regarding installation troubleshooting.
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Following the Mentor Graphics acquisition, NX 12 better unites electrical, mechanical, and control systems within one environment. Installation and Stability What's New in NX 12.0.1 - Fundamentals and User Interface for free
Specifies that the software architecture is compiled for 64-bit Windows operating systems, which is required to leverage the massive system memory needed for large engineering assemblies. NX 12 better unites electrical