An unknown response null: :text/html; charset=utf-8: :Bad Request was received

[mc12345678]

Considering that were performing an upgrade from 1.5.1 to 1.5.5, it would appear that the error occurred before the equivalent/applicable 1.5.5 file(s) were in place as the line containing the constant() function moved from 38 (zc 1.5.1) to 39 (as found in 1.5.5). If the error is not recent or reproducible in some consistent way, then it may have been involved with/related to the upgrade process.

All that said, if there are still issues and then are not related to the original topic of this thread, perhaps a new thread should be begun.

[answer=42]

Considering that were performing an upgrade from 1.5.1 to 1.5.5, it would appear that the error occurred before the equivalent/applicable 1.5.5 file(s) were in place as the line containing the constant() function moved from 38 (zc 1.5.1) to 39 (as found in 1.5.5). If the error is not recent or reproducible in some consistent way, then it may have been involved with/related to the upgrade process.

All that said, if there are still issues and then are not related to the original topic of this thread, perhaps a new thread should be begun.

I apologize that I didn't see your post, you are correct. The topic of the thread was solved.