Images not pointing to correct url

[Tekker]

Greetings,

 

Something weird:

When I upload a product-picture all is fine.

When my client upload a picture, it is pointing to wrong url.

With desktop sharing I tried with my login, same problem, not to right url.

In backoffice all pictures are showing right, even when you view full scale.

 

Example:

http://ddmechanics.wearewired.be/img/p/6/6/8/668.jpg   -> works when I upload ! (Picture is offline as we speak)

 

http://ddmechanics.be/668-thickbox_default/neuswiel-pvc-velg-buis-35-mm-.jpg --> doesn't work on other PC ...

 

I can imagin it has to do with Friendly URL, but when I disable, website isn't functioning 100% and can't try to look at pictures ....

 

I'm lost for words right now, it all worked great before, all of a sudden, bang, this happened.

Any idea's ?

 

Thanks

If needed I can donate piece of a Bitcoin, if answer can solve my problem.

[Tekker]

Any one ?