missing project

[GENERICA]

In a excel workbook I had written a long VBA project consisting of many forms (with their code) and various modules of sub codes. All this matter was stored in PERSONAL.XLB file and a command was set in the ribbon for rapid process activation. I made many copies with different names and stored in my note-book and used them for months in useful hydraulic computations. Now, a few days ago I opened one of these files and saw the command in the ribbon did not appear. Looking wit VBA editor I realized all the project was missing. Obviously the same thing happen in all file copies. Now the questions are: where is hidden the missing project? Is there any way to rescue what is missing?

 

[mole999]

Have you had an Excel update

 

[GENERICA]

Thank you, mole999 for your reply. My version is a 2013 Excel version. Updates may occur automatically by Microsoft. Other files had their own project VBA code and they work regularly. Any idea where the missing project code could be stored?