A family of Microsoft relational database management systems designed for ease of use.
Open the database, and click Ctrl-G to open the VBA editor. Select Tools... References.
The first thing to try would be to uncheck owc10.dll in the list of available references, and try compiling the database (Debug... Compile <project name> on the menu). If you don't get any error messages, it's likely that the library is not in fact needed.
If you do get an error message, you'll need to replace the obsolete (Office 2002, I believe) library with a more current one. Scroll down the list and find "Microsoft Office Web Components 11.0", or the most recent version, and check it. Compile again and see if that fixes the problem.
I believe - I may be mistaken here! - that this .dll has to do with the date picker control which was an optional add-in in earlier versions of Access. A2010 has its own builtin date picker; you may want to remove the (now redundant) date pickers from your forms.