crispin - 2008-02-02

"Value cannot be null. Parameter name: value"

I believe this may happen when:

In "PublishCalendar"

You "Choose Categories to Publish" and choose categories.

Then try to upload Outlook calendar items that have no category assigned in Outlook.

I seemed to fix this by either one of two ways:

1. If you want to add Outlook calendar items which have no category assigned:

In "SubscribeRemoteCalendar",

Do not "Add categories to this calendar".

In "PublishCalendar",

Do not "Choose Categories to Publish".

2. If you want to use Outlook calendar categories:

You need to make sure all your Outlook calendar items have categories assigned.

To check this, in Calendar view, choose View -> Arrange By -> Categories.

After all your Outlook calendar items have categories assigned,

In "SubscribeRemoteCalendar",

Click "Add categories to this calendar", and add all categories to the list.

In "PublishCalendar",

Click "Choose Categories to Publish", and add all categories to the list.

Hope this helps - it may have worked only with my configuration - I suggest you test and work with a copy / duplicate of your calendar in case of problems!