Fatal Memory error in page revisions

Hello,

I am a non-techie…so bear in advance if I don’t get this explanation quite right.

I have one page on my site that I can no longer edit. I have updated this page several times (probably close to 100) as I’ve been tweaking it for a variety of reasons.

The page views fine online: http://www.bridging-the-gap.com/become-a-business-analyst/

But when I try to edit it through the WP admin the text box with the content is essentially blank. If I use my cursor to highlight a section, the text displays under the highlighting. I can edit it in the HTML view.

Under page revisions, I am getting the following message:
Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 24 bytes) in /home7/bridgin5/public_html/wp-includes/taxonomy.php on line 1917

I am also running the thesis theme.

I have found some other forum topics on setting a different memory limit. This seems a bit beyond me.

I am fine continuing to edit the page in the HTML view. I would like to know if this is a symptom of what will become a larger problem. Any help you could provide would be appreciated.

Thank you,
Laura