Resource Pooling - Files saved on a SharePoint

Hi

I've created a Master Resource Sheet for my projects in order to allocate resources. Both the resource sheet and the project plans are saved on a SharePoint site. When trying to allocate resources, I get the following error message "Project does it support resource pooling on a Web Server".......is there an alternative way for me to allocate resources from a pool, whilst still saving files onto the SharePoint site?