It's about Protel 99 SE SP6

[ManuTH]

Currently I use Protel 99 SE for my Arduino PCB projects. But by chance I might have deleted some database files of the program. It makes me can't store the project file /design storage type/MS Access Database. The POP UP warning is Design Explorer Error, Root has been deleted. I am in the dark now. If someone knows how to fix it, please give me advices. Thank you very much

 

[kellys_eye]

Reload Protel and the files should be restored.

 

[bidrohini]

If you find the deleted database files in the recycle bin, you can restore them to their original location.