no img-tag generated

hello,

i've used img_assist without problems with version 4.7.
i just installed img_assist with drupal 5.2 and it only shows me title and description of the image (in filters inline images is enabled) but it doesnt generate the img-tag ( if i tell img_assist to use html-tags (img_assist-tags neither show me images). but in the overview to add the pictures i can see the image well.

this is the generated code:

<span class="inline left"><span class="caption" style=""><strong>farbenfroh: </strong>Ein Vertreter der farbenfrohen Fauna Nicaraguas. Gesichtet im Umfeld des Momotombos</span></span>

why cant img_assist generate the code with the img-tag to see my images??

thank you for your help,
Felix