diff --git a/100_core/src/gplx/Gfo_usr_dlg_base.java b/100_core/src/gplx/Gfo_usr_dlg_base.java
index 1cf73c444..84767b802 100644
--- a/100_core/src/gplx/Gfo_usr_dlg_base.java
+++ b/100_core/src/gplx/Gfo_usr_dlg_base.java
@@ -51,6 +51,7 @@ public class Gfo_usr_dlg_base implements Gfo_usr_dlg {
 				return tmp_bfr.To_str_and_clear();
 			}
 			catch (Exception e) {	// NOTE: can fail if fmt has ~{}; callers should proactively remove, but for now, just return fmt if fails; EX:Page_sync and en.w:Web_crawler; DATE:2016-11-17
+				Err_.Noop(e);
 				return fmt;
 			}
 		}
diff --git a/400_xowa/src/gplx/xowa/bldrs/cmds/utils/Xob_download_cmd.java b/400_xowa/src/gplx/xowa/bldrs/cmds/utils/Xob_download_cmd.java
index ea68b6ff0..744a44c39 100644
--- a/400_xowa/src/gplx/xowa/bldrs/cmds/utils/Xob_download_cmd.java
+++ b/400_xowa/src/gplx/xowa/bldrs/cmds/utils/Xob_download_cmd.java
@@ -64,4 +64,24 @@ public class Xob_download_cmd extends Xob_cmd__base implements Xob_cmd {
 	private static final String
 	  Invk_dump_date_ = "dump_date_", Invk_dump_type_ = "dump_type_", Invk_unzip_ = "unzip_"
 	, Invk_dump_src_ = "dump_src_", Invk_dump_trg_zip_ = "dump_trg_zip_", Invk_dump_trg_bin_ = "dump_trg_bin_";
+
+	public static void Add_if_not_found_many(Xob_bldr bldr, Xowe_wiki wiki, String... dump_types) {
+		IoItmHash itm_hash = Io_mgr.Instance.QueryDir_args(wiki.Fsys_mgr().Root_dir()).ExecAsItmHash();
+		for (String dump_type : dump_types)
+			Add_if_not_found(bldr, wiki, itm_hash, dump_type);
+	}
+	private static void Add_if_not_found(Xob_bldr bldr, Xowe_wiki wiki, IoItmHash itm_hash, String dump_type) {
+		if (!Found(itm_hash, dump_type))
+			bldr.Cmd_mgr().Add(new Xob_download_cmd(bldr, wiki).Dump_type_(dump_type));
+	}
+	private static boolean Found(IoItmHash hash, String dump_type) {
+		String match = String_.Format("{0}.sql", dump_type); // EX: "page_props.sql"
+		int len = hash.Count();
+		for (int i = 0; i < len; i++) {
+			IoItm_base fil = (IoItm_base)hash.Get_at(i);
+			if (String_.Has(fil.Url().NameAndExt(), match))
+				return true;
+		}
+		return false;
+	}
 }
diff --git a/400_xowa/src/gplx/xowa/bldrs/installs/Xoi_cmd_wiki_import.java b/400_xowa/src/gplx/xowa/bldrs/installs/Xoi_cmd_wiki_import.java
index 835d140e7..7dff7c988 100644
--- a/400_xowa/src/gplx/xowa/bldrs/installs/Xoi_cmd_wiki_import.java
+++ b/400_xowa/src/gplx/xowa/bldrs/installs/Xoi_cmd_wiki_import.java
@@ -16,9 +16,12 @@ You should have received a copy of the GNU Affero General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package gplx.xowa.bldrs.installs; import gplx.*; import gplx.xowa.*; import gplx.xowa.bldrs.*;
-import gplx.core.threads.*; import gplx.xowa.bldrs.*; import gplx.xowa.guis.views.*; import gplx.xowa.bldrs.cmds.utils.*;
+import gplx.core.threads.*; 
+import gplx.xowa.bldrs.*; import gplx.xowa.bldrs.cmds.utils.*;
+import gplx.xowa.guis.views.*;
 import gplx.xowa.wikis.domains.*;
 import gplx.xowa.htmls.hrefs.*;
+import gplx.xowa.addons.wikis.ctgs.bldrs.*;
 class Xoi_cmd_wiki_import implements Gfo_thread_cmd {
 	private boolean running;
 	private Xowe_wiki wiki;
@@ -86,8 +89,7 @@ class Xoi_cmd_wiki_import implements Gfo_thread_cmd {
 
 		// setup category
 		if (wiki.Domain_itm().Domain_type_id() != Xow_domain_tid_.Tid__other) {	// do not add category if not wmf; note that wikia wikis will not have category dumps; DATE:2016-10-22
-			bldr.Cmd_mgr().Add(new gplx.xowa.bldrs.cmds.utils.Xob_download_cmd(bldr, wiki).Dump_type_(gplx.xowa.addons.wikis.ctgs.bldrs.Xob_catlink_cmd.Dump_file_name));
-			bldr.Cmd_mgr().Add(new gplx.xowa.bldrs.cmds.utils.Xob_download_cmd(bldr, wiki).Dump_type_(gplx.xowa.addons.wikis.ctgs.bldrs.Xob_pageprop_cmd.Dump_file_name));
+			Xob_download_cmd.Add_if_not_found_many(bldr, wiki, Xob_catlink_cmd.Dump_file_name, Xob_pageprop_cmd.Dump_file_name);
 			bldr.Cmd_mgr().Add(new gplx.xowa.addons.wikis.ctgs.bldrs.Xob_pageprop_cmd(bldr, wiki).Src_dir_manual_(dump_url.OwnerDir()));
 			bldr.Cmd_mgr().Add(new gplx.xowa.addons.wikis.ctgs.bldrs.Xob_catlink_cmd(bldr, wiki).Src_dir_manual_(dump_url.OwnerDir()));
 		}