--- a/hgkw/keyword.py	Tue Jan 29 21:15:57 2008 +0100
+++ b/hgkw/keyword.py	Wed Jan 30 01:24:10 2008 +0100
@@ -133,10 +133,14 @@
             # kwrepo.wwrite except when overwriting on commit
             if self.ctx is None:
                 self.ctx = self.repo.changectx()
-            fnode = self.ctx.filenode(path)
-            fl = self.repo.file(path)
-            c = context.filectx(self.repo, path, fileid=fnode, filelog=fl)
-            node = c.node()
+            try:
+                fnode = self.ctx.filenode(path)
+                fl = self.repo.file(path)
+                c = context.filectx(self.repo, path, fileid=fnode, filelog=fl)
+                node = c.node()
+            except revlog.LookupError:
+                # eg: convert
+                return subfunc == self.re_kw.sub and data or (data, None)
         elif subfunc == self.re_kw.sub:
             # hg kwcat using kwfilelog.read
             c = context.filectx(self.repo, path, fileid=node)