ArcMap cannot find my newly created Feature Class!

[EricBladh]

I created a new personal geodatabase.  Then I used the create feature class tool in ArcToolbox to create some empty feature classes in the new Geodatabase.  As they were created they were automatically added to the table of contents in ArcMap.  I then started editing and they are shown in the create feature class template.  However when I try to digitize a new feature in one of the new layers it gives me an error saying that no such layer is found and it has failed to draw.  When I go into ArcCatalog and look in my geodatabase for the feature classes I created they are not there.  What is going on?

[MarcoBoeringa]

I created a new personal geodatabase.

Are you really talking about a personal geodatabase, a.k.a. Microsoft Access (*.mdb) database, that you used to create the new layers? The behaviour / problem you describe is more likely to occur due to some rights issue in an enterprise database like Oracle or SQL Server, although it still sounds weird according to your description being able to edit it the first time.

[NidhinKarthikeyan]

I created a new personal geodatabase.  Then I used the create feature class tool in ArcToolbox to create some empty feature classes in the new Geodatabase.  As they were created they were automatically added to the table of contents in ArcMap.  I then started editing and they are shown in the create feature class template.  However when I try to digitize a new feature in one of the new layers it gives me an error saying that no such layer is found and it has failed to draw.  When I go into ArcCatalog and look in my geodatabase for the feature classes I created they are not there.  What is going on?

I've seen features disappearing from ArcMap and  Feature dataset/Feature class not visible in ArcCatalog(Privilege issues in ArcSDE database).

Browse through windows explorer, to the location of the Personal Geodatabase that you had created and open the Microsoft Access Database. Check whether you are able to find the problematic Feature class, under 'All Tables'. Also mention the Version of the client.

[WilliamCraft]

Which version of ArcGIS Desktop are you using?  If you really did create a personal geodatabase, it's possible that it was created under your user profile (assuming you are using Windows) if you accepted the default settings when creating it to begin with.  That being said, do you have a saved MXD with the layers you described in ArcMap?  If so, you can right click on one of the layers to get its properties and use the Source tab to identify the location of the geodatabase.