Cannot 'Install Database'

[johnlawton]

Hi, I'm new to the forum. I have only just downloaded Blue Prism on an evaluation. I have installed Blue Prism and on my first run of it I am asked to create a password which I have done, then I'm asked to Install Database:

I then encounter and 'Ooops' screen:

When I click on Error Details I get this:

Object reference not set to an instance of an object.

System.NullReferenceException: Object reference not set to an instance of an object.
at BluePrism.AutomateAppCore.LocalDatabaseInstaller.get_a()
at BluePrism.AutomateAppCore.LocalDatabaseInstaller.get_DatabaseExists()
at AutomateUI.WelcomeWizard.h(Object iir, DoWorkEventArgs iis)

Can anyone shed any light on this and how to resolve it as I only have a 30 day evaluation period and I'd like to test it before the time runs out.
Thanks,
John

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john lawton
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[johnlawton]

Thanks Chris but this is the error I get now....

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john lawton
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[chris.strong]

OK, so that's not what I was expecting.

We have conflicting messages, one message that says Database 'BluePrism' already exists and another saying 'Database' named 'BluePrism' does not exist.

Question: When you uninstalled earlier, did you also delete the folders and run the commands in the Command Prompt (cmd)?

Repeat of the uninstall steps (extracted from the guide)

You can simply uninstall Blue Prism using the Windows Add or remove programs or run the installer and select the uninstall option. To completely remove all Blue Prism components and data from your device, follow the additional steps below:

1. Open the command line Run the following commands to stop and remove the local database instance:
   1. "C:\Program Files\Microsoft SQL Server\140\Tools\Binn\sqllocaldb" stop blueprismlocaldb
   2. "C:\Program Files\Microsoft SQL Server\140\Tools\Binn\sqllocaldb" delete blueprismlocaldb
2. Open Windows Explorer Remove the following configuration folders:
   1. C:\Users\[username]\AppData\Local\Blue Prism Limited
   2. C:\Users\[username]\AppData\Roaming\Blue Prism Limited
   3. C:\Users\[username]\AppData\Local\Microsoft\Microsoft SQL Server Local DB\Instances\BluePrismLocalDB
   4. C:\ProgramData\Blue Prism Limited
3. Microsoft SQL Server 2017 LocalDB
   1. SQL Server 2017 LocalDB is installed and set up during the Trial and Learning Edition setup. If this is not used for any other purpose and is no longer required, you can uninstall using the Windows Add or remove programs.

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Chris Strong
Product Manager
Blue Prism
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[chris.strong]

Hello John,

We have been through the code line by line to identify what we think has caused the problem you (and others) have experienced.  We now think the problem has been identified and resolved with the next release of Blue Prism. 

We have rewritten the code, that shows up in the error, to accommodate the ability to update the database to the latest version.  This was not needed in the first version as we knew (or thought) all Blue Prism Trial and Learning Edition installs would be installing for the first time.

Therefore, completely stripping Blue Prism for your computer (including the configuration files) will resolve your issue.  We've included steps at the back of the 6 GETTING STARTED - BLUE PRISM TRIAL AND LEARNING EDITIONS guide on how to completely remove Blue Prism Trial and Learning Edition.

Going forward, with the next release of Blue Prism Trial and Learning Edition, the issue should not occur. (due to be released within the next month or so)

Kind regards

Chris Strong

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Chris Strong
Product Manager
Blue Prism
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