Upgrade procedure

Please give me the steps to upgrade I am on version 15.6.94. All of a sudden I am unable to email invoices (Error 400) is it a firmware issue??

1- Download Manager https://www.manager.io/desktop/download
2- Install the software and done.
Note: No need to uninstall the older setup it will update the manager to the latest version without losing your you data but just to be on the safe side backup your business so if something went wrong you can always restore your backup.

Latest version right now 16.11.74 there is some new features you missed you can find them here:
https://forum.manager.io/c/releases

http://www.mycrosscom.com/WorkOrder/OpenOrders.aspx

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Thank you for the quick response. See screenshot of error I received it would not install

Read this topic:

Update .Net and you’re good to go.

https://www.microsoft.com/en-us/download/details.aspx?id=42642