Installing Umbraco package breaks site

Question

I have an Umbraco site that was working fine and I could login to the Umbraco back office

I installed the Links Picker package - https://our.umbraco.org/projects/developer-tools/links-picker/ - and then was not able to login to the backoffice OR my website. I was greeted with the message

Type 'Umbraco.Core.PropertyEditors.ValueConverters.IntegerValueConverter' cannot be an IPropertyValueConverter for property 'mainBrandLogoHeight' of content type 'Brand' because type 'Umbraco.Core.PropertyEditors.ValueConverters.IntegerValueConverter' has already been detected as a converter for that property, and only one converter can exist for a property.

I have been into the installedpackages.config file and removed the entry for this package but my site/back office still will nto load

How can I login or resolve this issue?

Answer 1

The package's our.umbraco.linkspicker.dll file is still in the /bin folder of your project and so Umbraco is still trying to use it.

When manually uninstalling a package it's important to remove any associated files listed in the installedPackages.config file.