Failure in reinstalling NT

[grd974]

Hello,

Ninja Trader was running when something went wrong with my laptop power supply and my platform was shut down.
When I re-launched NT, the workspace was restored then I immediately got an error report in a window titled "NinjaTrader application" offering to send to Microsoft which I did not.
I wanted to uninstall NT from via Control Panel but I could not find the relevant menu to do so; so I first uninstalled NT from Windows XP menu then I re-installed it.
When I launched it, I got the same error report; everytime I launch NT, it proceeds to restoring the workspace but I immediately get this message :

NinjaTrader application
Error signature
EventType : clr20r3 P1 : ninjatrader.exe P2 : 6.0.1000.3
P3 : 46782f5d P4 : system.windows.forms P5 : 2.0.0.0 P6 : 461ef203
P7 : 150c P8 : 12f P9 : system.invalidoperationexception

and NT disappears as soon as I click any of the button in the error window.

What should I do to recover ?

[NinjaTrader_Ray]

Please delete the following file and then try starting NT.

My Documents\NinjaTrader 6\workspaces\Default.xml

[grd974]

I've done so.
But when I attempt to connect to Zen-Fire which was operating 2 hours ago, I get the text "Connecting - Zen-Fire" but it never comes green and when I try to disconnect from it I get the message : "Login failed".

When I try "Connect Market Replay Connection" I get the message :

Login failed: Cbi.Connection.ConnectNow: Failed to call IAdapter.Connect: GetObjectSet failed for NinjaTrader.Cbi.Account

[NinjaTrader_Ray]

It could be that your database is corrupt. Please shut down NT and delete the following file and restart. Unfortunately, you will lose historical trade data.

My Documents\NinjaTrader 6\db\NinjaTrader.mdb

[grd974]

It works again, thanks.