Multiple arguments problem

Drupal 6.14
Views 2.8
Viewfield 6.x-1.x-dev (3 dec 2009)

Hi there,

I seem to be having a problem with multiple arguments. Here's what I have:

I have a photoblog, for this I've created two content types:
- one for the pictures, I mainly used Filefield, Imagefield and ImageCache for this. Every picture has a text field in which a text is manually typed to be used as an argument later on.
- one for the articles. In here the pictures are shown through a view which accepts 1 argument, coming from the mentioned text field in the picture content type, which is displayed in a Viewfield.

This all works perfectly, but here comes the problem I'm having. I also have another Viewfield set up in the article which takes two arguments to display one of the chosen pictures as a lead image. This has worked perfectly for over a year, but now I suddenly saw this isn't working anymore, the image is not displayed.

At first I thought there was an issue with Views because when I typed in two arguments in the preview area of Views seperated by a comma, nothing would show. I just discovered that arguments have to be seperated by a / in the preview and when I do so, it works. Since I've been using a comma throughout all my articles I thought I'd change it to a / to see if this would make a difference. It didn't. I emptied the cache too, still no difference.

Does anyone know what's going on?

Thanks in advance!