Image transforms return cpresources URL in Craft Pro 2.5.2754 Despite having tried the tips from Image transforms returning cpresources url, I am still having issues with image-transforms.

I am running Craft Pro 2.5.2754

asset-source details as follows:

Handle: paragraphPictures
Type: Local folder
Path: ./uploads/images/paragraphPictures/
URL: /uploads/images/paragraphPictures/


image-transform details as follows:

Handle: frontpageNewsPicture
Mode: Crop
Crop Position: Center Center
Width: 492
Height: 348
Quality: Auto
Format: png


'generateTransformsBeforePageLoad' =&gt; true is set in craft/config/general.php

folder-permissions as follows:

public/images including all sub-folders and files are owned by apache:apache (the user that runs the apache service) with 777 rights

template-example

{% if entries|length %}
    &lt;ul class="entry-list clear"&gt;
        {% for entry in entries %}
            {% set entryUrl = entry.url %}
            {% set picture = entry.pictures.first() %}
            &lt;li&gt;
                &lt;div class="entry-container"&gt;
                        {% if picture %}
                        {% set picData = craft.norsok.getPicData(picture) %}
                        {% set maxWidth = picture.getWidth('frontpageNewsPicture') %}
                        &lt;a class="entry-image" href="{{ entryUrl }}"&gt;
                            &lt;img class="entry-picture"
                                     src="{{ picture.getUrl('frontpageNewsPicture') }}"
                                     style="max-width: {{ maxWidth }}px;"
                                     title="{{ picData['title'] }}"
                                     alt="{{ picData['altText'] }}" /&gt;
                        &lt;/a&gt;
                    {% endif %}
                    &lt;h3 class="entry-name"&gt;
                        &lt;a href="{{ entryUrl }}"&gt;{{ entry.title }}&lt;/a&gt;
                    &lt;/h3&gt;
                    &lt;h4 class="entry-ingress"&gt;
                        &lt;a href="{{ entryUrl }}"&gt;{{ entry.ingress }}&lt;/a&gt;
                    &lt;/h4&gt;
                &lt;/div&gt;
            &lt;/li&gt;
        {% endfor %}
    &lt;/ul&gt;
{% endif %}


this is what the page-source looks like

&lt;img class="entry-picture" src="http://norsok.tibe.no/cpresources/transforms/1?x=bptVEjjgx" style="max-width: 492px;" title="Stengelnematode G  Taksdal" alt="En Stengelnematode (Foto: G. Taksdal)"&gt;


and this is what my console tells me

GET http://norsok.tibe.no/cpresources/transforms/2?x=bptVEjjgx 500 (Internal Server Error)
GET http://norsok.tibe.no/cpresources/transforms/1?x=bptVEjjgx 500 (Internal Server Error)


the actual images are located here:

http://norsok.tibe.no/uploads/images/paragraphPictures/img-9889-kraftfor-1-foto-anita-land.jpg
http://norsok.tibe.no/uploads/images/paragraphPictures/StengelnematodeG.Taksdal.jpg

At this point I am completely baffled and pray to the Stack Exchange-gods for assistance :)
Turns out this had to do with imagemagick (or one of its subpackages) not being compiled in a way that Craft 2.5 thinks fondly of, which we discovered after editing the bootstrap to turn off all custom error-logging.