with KNIME 2.3 we upgraded to BIRT 2.6.1. which contains changes in the report file format. When opening old reports in the Report Designer they should be converted on-the-fly and saved in the new format.
Could you please have a look at the default_report.rptdesign file of an old report that doesn't work - it is located in your workflow directory - and post the first 3 lines of this file?
I have re-setup a part of the reports and found out that sometime an image might cause a problem, sometimes a copy-and-paste action results in an (that) error message.
I have to check other reports to find a problematic case.
Has with the upgrade the behaviour with respect to multi line strings changed? The new version shows (only) the first line of a text (retrieved from a MySQL database).
Indeed the thread in the BIRT forum was helpful. The (mentioned) combination of using a dynamic data field and the script is the right (but not perfect) direction. I have the impression that only the first CR/LF is replaced...