diff --git a/gwsumm/archive.py b/gwsumm/archive.py
index 10a3e841..c26ba980 100644
--- a/gwsumm/archive.py
+++ b/gwsumm/archive.py
@@ -338,6 +338,9 @@ def archive_table(table, key, parent):
         the h5py group in which to add this dataset
 
     """
+    # copy table so we can modify meta without impacting anything
+    table = table.copy(copy_data=False)
+
     if len(table) == 0:
         warnings.warn("%r table is empty and will not be archived" % key)
         return
diff --git a/gwsumm/tabs/etg.py b/gwsumm/tabs/etg.py
index 604c007c..4ea06417 100644
--- a/gwsumm/tabs/etg.py
+++ b/gwsumm/tabs/etg.py
@@ -187,20 +187,23 @@ def from_ini(cls, config, section, **kwargs):
                 ]
             # override from config
             if config.has_option(section, 'loudest-columns'):
-                new.loudest['columns'] = map(
+                new.loudest['columns'] = list(map(
                     lambda s: re_quote.sub('', s),
-                    config.get(section, 'loudest-columns').split(','))
+                    config.get(section, 'loudest-columns').split(',')
+                ))
             if config.has_option(section, 'loudest-labels'):
-                new.loudest['labels'] = map(
+                new.loudest['labels'] = list(map(
                     lambda s: re_quote.sub('', s),
-                    config.get(section, 'loudest-labels').split(','))
+                    config.get(section, 'loudest-labels').split(',')
+                ))
             else:
                 new.loudest['labels'] = [' '.join(map(str.title, s.split('_')))
                                          for s in new.loudest['columns']]
             if config.has_option(section, 'loudest-rank'):
-                new.loudest['rank'] = map(
+                new.loudest['rank'] = list(map(
                     lambda c: re_quote.sub('', c),
-                    config.get(section, 'loudest-rank').split(','))
+                    config.get(section, 'loudest-rank').split(',')
+                ))
             if config.has_option(section, 'loudest-dt'):
                 new.loudest['dt'] = config.getfloat(section, 'loudest-dt')
         else:
diff --git a/gwsumm/tabs/sei.py b/gwsumm/tabs/sei.py
index 4bc64986..4776b78e 100644
--- a/gwsumm/tabs/sei.py
+++ b/gwsumm/tabs/sei.py
@@ -30,8 +30,12 @@
 
 import numpy
 
+from MarkupPy import markup
+
 from gwpy.time import Time
 
+from gwdetchar.io import html as gwhtml
+
 from .registry import (get_tab, register_tab)
 from .. import (globalv, html)
 from ..config import GWSummConfigParser
@@ -297,7 +301,7 @@ def write_state_html(self, state):
                     totals[i][j] = c
             # add row total
             totals[i][-1] = totals[i].sum()
-            page.th(totals[i][-1])
+            page.th(str(totals[i][-1]))
             page.tr.close()
         page.tbody.close()
 
@@ -306,8 +310,7 @@ def write_state_html(self, state):
         page.tr(class_='header')
         page.th('Totals')
         for i in range(totals.shape[1]):
-            t = totals[:, i].sum()
-            page.th(t)
+            page.th(str(totals[:, i].sum()))
         page.tr.close()
         page.thead.close()
         page.table.close()
@@ -381,7 +384,7 @@ def write_state_html(self, state):
                 rows[-1].append('<br>'.join(assoc))
             else:
                 rows[-1].append('-')
-        page.add(str(html.table(
+        page.add(str(gwhtml.table(
             headers, rows,
             caption=('List of %s watch-dog trips in interval [%d .. %d) - '
                      'trips are considered \'associated\' if they fall within '