Huge problem, 500 error after upgrade to 4.33

Hi.

I have a huge problem. After upgrading to 4.33 for the securitypatch and had it working for a little while it now renders premature script headers and I cannot do anything. Really, really strange and I do not understand anything.

The chmod of the mt folder is as it should be 755, the cgi´s are also 755, the chron job works and strangely enough you can comment on entries even though it gives a sesrver error but the comment goes through and also gets posted on the website so beneath everything things do work.

The serverprovider has gone through things with me and we do not underwstand anything, he has done all he could do and I wonder if this is something anyone has knowledge about.

The serverprovider also said that they will not continue to support perl from about mid summer or so and then what. I have had MT since before 2.1 and have no idea what to do, I do not want to port to Wordpress. Any solution for MT besides in perl?

Thanks a lot for any possible help on the 500 error problem.

Many regards and thanks in advance

Carina