I have met such a problem: after inserting some amount of items i saw, that cannot display all the items - simple view with empty source and filter displayed nothing.

 

First I realized that it didn't display anything, when I set source to "OrganizerItemType = "Входящие"" ("Inbox" from Russian). Then, after some rounds of dichotomy, I discovered, that the only item was the reason of the trouble - IDItem = 2103. This item didn't display anywere, including quick search and, if it met source conditions of some grid, no other items displayed in that grid.

 

While trying to get rid of this item, i discovered one more - IDItem = 2114. I couldn't delete it - error messages were displayed, sometimes it disappeared, but after refreshing grid it returned. Also the Properties Pane for it often turned empty.

 

So I created a copy of the database, deleted all items from it by the option in Database Management (2114 did deleted only for the fourth time), and copied to it all the items except 2103 and 2114 - so I can continue my work.

Also I created a database with those strange items - it repeats all described errors. Even more - a grid with 2114 in this database (the only grid) displays an error message in status bar: yellow warning "Item_ReadValues<timestamp here>Application-defined or object-defined error(I=0)". And program hangs, if yout try to open "Manage Fields" from "View".

 

Hope this bug can be fixed somehow., and the sample database can help in debugging.

 

And one more curious thing: if you create three items - A,B,C - and set A as B's child, B as C's child, C as A's chid (in different grids), then, if you open a grid that is to display all three of them, nothing will be displayed (maybe, on some special hierarchy settings - don't remember already).