MySQL Bugs: #50679: Can not open SQL Editor: Nullable object must have a value

Bug #50679	Can not open SQL Editor: Nullable object must have a value
Submitted:	28 Jan 2010 6:55	Modified:	28 Feb 2010 15:55
Reporter:	Yi Song	Email Updates:
Status:	No Feedback	Impact on me:	None
Category:	MySQL Workbench: SQL Editor	Severity:	S2 (Serious)
Version:	mysql-workbench-oss-5.2.14-beta-win32	OS:	Windows
Assigned to:		CPU Architecture:	Any

Description:
I just installed the following on WinXP: 
mysql-workbench-oss-5.2.14-beta-win32.msi 
mysql-essential-5.1.42-win32.msi 

MySQL server works fine, but workbench can not start SQL Editor. 

The connection is fine, because I can open Server Admin, and works fine. 
But when I click the connection to start SQL Editing, it pop up a window: 
Can not open selected view (dbquery) 
Nullable object must have a value. 

BTW, the old MySQL Query Browser from GUI Tools can work. 
mysql-gui-tools-5.0-r17-win32.msi

Maybe workbench 5.2.14 is not compatible with MySQL Server 5.1?

How to repeat:
As the above desc.

Thank you for the bug report. I couldn't repeat on Windows Vista X64 and MySQL server 5.1.42. Have you created a New Server Instance and New Connection?. Thanks in advance.

Yes, I created new Server Instance and Connection.

I can double click the Instance to open Server Admin window, and use Status, Configuraton, Accounts, etc.

But when I double click the Connection to open SQL Editor, it popop the error window as previous desc.

Possible related to .Net Framework? When I install .Net 3.5, it hung for one time, so I killed it and reinstalled it again.

could you try with latest available version (5.2.15) and see if the problem persists?

No feedback was provided for this bug for over a month, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".