Index: openacs-4/packages/acs-api-browser/www/proc-view.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-api-browser/www/proc-view.tcl,v
diff -u -r1.10.2.5 -r1.10.2.6
--- openacs-4/packages/acs-api-browser/www/proc-view.tcl	1 Jan 2016 10:28:56 -0000	1.10.2.5
+++ openacs-4/packages/acs-api-browser/www/proc-view.tcl	19 Apr 2016 19:26:51 -0000	1.10.2.6
@@ -36,7 +36,7 @@
 set return_url [export_vars -base [ad_conn url] {proc version_id}]
 set error_msg ""
 
-if { ![info exists source_p] } {
+if { ![info exists source_p] || $source_p eq ""} {
     set source_p $default_source_p
 }