So I tried to rename my file using right click in Windows Explorer and selecting Solidworks - Rename. However I accidentally deleted the period in the name, so instead of "Vat 200SS left.SLDPRT" it became "Vat 200SS leftSLDPRT". I then wasn't able to rename it using in Windows Explorer through Solidworks as it didn't recognise it as a Solidworks file.

When I opened one of the assemblies that is was a part of, it opened fine. But I am unable to rename it in the feature tree. When I try to add a period in the name using the feature tree I get the error "You cannot rename the component. No model is loaded in memory".

Does anyone know how I can fix this?