I'm doing a CONSTRUCT query to my repository through the openrdf-workbench interface; it shows the results correctly but whenever I try to click the download button and export the results to any format it allways return a file with no results and the following content:
I have the same problem, but interestingly only with one particular CONSTRUCT query (so far). I have another CONSTRUCT query where the results can be downloaded. I'm guessing your symptom is the same i.e. the query runs, what you see in the SESAME Workbench page visually looks normal, but the file downloaded just contains an XML error file. I wonder if the head section
<head><link href='info'/><link href='namespaces'/></head> is a clue? Is there something wrong with the namespaces?
I'm going to continue experimenting, trying to find the unique difference between my two queries - there must be a reason somewhere - length of query? memory limitation?...
The version padded with comments works just fine, but the results are not downloadable.
In other words, it is entirely due to the length of the query (in my case). When the query is too long, SESAME pops up a message warning you that your query will not be saved. That is when the bug kicks in.