diff --git a/timeline/week18.txt b/timeline/week18.txt
index a59125adfbb6cdcca9960402ae3b57ba88e16da4..aef7f6fad8f54528e4cef697aeff85b1703de3a7 100644
--- a/timeline/week18.txt
+++ b/timeline/week18.txt
@@ -37,6 +37,13 @@ Week 18 (27.04.-03.05.)
 		   characters; the lowest of the range is 0xa0, which
 		   is below 0x7c (the pipe symbol)
 
+		-> importing the files w/ fixed IRIs I get new errors
+                   from graphDB (sigh)
+
+		     RDF Parse Error: The processing instruction target matching "[xX][mM][IL}' is not allowed
+
+		   e.g. w/ file Flow_Networks.Graph_Impl.rdf.gz
+
 	[ ] run all quries from ulo paper in graphdb
 
 [ ] fix exported IRIs