Quote Originally Posted by raj151857 View Post

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Calculation Error: Memory mapped file for source contributions has insufficient size. The file size can be increased by setting the Preferences entry No. of Upstream Contributing Branches to a larger number (Max=99)

"Go to Tools\Options (Preferences)\Arc Flash and set "No. of Upstream Contributing Branches" to 50 for example. If the message appears again you would need to set it to a higher number and up to 99. This is needed for memory allocation for your project* which appears to be large based on the message you are getting."