I managed to sort the problem. I dont know why but in my resource sheet I had 3 lines with dates in the resource ID. After deleting the lines the schedule operated normally again
Spider Project is most functional and powerful professional project management software.
The first SP version was launched in 1993 and since then it has been constantly improved. Today is used in 34 countries though most Spider Project customers are in Russia. Spider Project offers numerous unique functional features and is the only PM software that optimizes resource, cost, and material constrained schedules and budgets for projects and portfolios.
The unique features of Spider Project include Quantity Based Scheduling, Conditional Scheduling, Skill Scheduling, Optimal Resource, Cost and Material Leveling, Resource Critical Path Calculation, Cash and Material Flows Calculation and Management, Trend Analysis, Advanced Risk Simulation and Analysis, Calculation of Success Probability Trends, Calculation and Management of required Project Time and Cost Buffers, Application of Corporate Norms, Management of many Parallel Budgets, Multiple WBS and many others.
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I managed to sort the problem. I dont know why but in my resource sheet I had 3 lines with dates in the resource ID. After deleting the lines the schedule operated normally again
Willem,
Some further info that might help us to help you:
What version of MS Project are you using to open?
Is it the same version used to create the file?
What file format is the project?
How big (Mb) is the project file?
What happens when you try to open -eg do you get an error message?
Have you tried opening it on a different machine?
Have you tried creating a new project of similar size and opening that?