Access to Data File Error Message

Hello there! What could be the problem with my system?
I have been having problems lately of accessing my previously created and saved database files. Moreover, creating Object store too has been a problem. What could be wrong with my system?
I hope I will be able to find sufficient answers from you.

Error
Access to the database file is not allowed. [ File name = ]
OK
Error
UnabIe to create object store at "C:Program FilesAltirisBarcode ManagerDataPermission Test",
OK
