i'm pretty new to silverstripe, i'm currently working on trying to migrate a few items from an existing website i've built from scratch. so far, i've had good success, the stuff i'm migrating is all php based with a mysql backend for data storage in some cases. i'm having trouble with one item, dynamically generated graphs that use jpgraph (jpgraph.net).

i've got a very simple example in place now, when i browse to the page, i get the following error:

Fatal error: Call to undefined method HTMLText::setValue() in /var/www/localhost/htdocs/sapphire/core/ViewableData.php on line 380

i've isolated the issue to jpgraph's include files, if i add them to my new php file for use with silverstripe, i get the error. otherwise silverstripe works fine, minus the graphs, of course.

is there a way to work around this error?

how do i get the backtrace? if you can tell me or point me in the right direction to find out how... would love to get this one solved.

ok, i got xdebug installed and have looked at the trace, but first...

i also installed image-gallery last night (can't seem to get pictures to upload or appear in an album even though i have swfupload and/or uploadify installed, but thats a topic for another day). i now get a different error on my jpgraph page, this time saying the the class 'Text' cannot be redeclared. soooo, jpgraph uses a class named 'Text', while i haven't dug into image-gallery at all, i am sure it does too.

after removing image-gallery, i am back to the previous error (HTMLText::setValue() ...). the trace, if i have done this right, is quite long, measuring in at just under 2 megs (attached here, bzip2 compressed). i can't see anything pointing out errors, perhaps i'm not running xdebug correctly... help is appreciated.