diff --git a/docs/versions.rst b/docs/versions.rst
index 8b46b22..1c96eab 100644
--- a/docs/versions.rst
+++ b/docs/versions.rst
@@ -11,6 +11,10 @@ Versions and Change Log
 .. TODO
     * self.padl and r / 12 in make html width adj s/b elsewhere
 
+5.4.1 and 5.4.1
+------------------
+* Minor bug fixes; tikz method no works for empty dataframe.
+
 5.4
 ----
 * Can now pass a namedtuple as df; it is converted to a dataframe. 
diff --git a/greater_tables/__init__.py b/greater_tables/__init__.py
index 0a393d0..8ab7541 100644
--- a/greater_tables/__init__.py
+++ b/greater_tables/__init__.py
@@ -1,6 +1,6 @@
 __project__ = 'greater_tables'
 __author__ = 'Stephen J Mildenhall'
-__version__ = '5.4.1'
+__version__ = '5.4.2'
 
 from . core import GT
 from . fabrications import * 
diff --git a/greater_tables/core.py b/greater_tables/core.py
index 5abd967..8200f9c 100644
--- a/greater_tables/core.py
+++ b/greater_tables/core.py
@@ -281,7 +281,8 @@ class GT(object):
 
         if len(df) > self.config.large_warning and not self.config.large_ok:
             raise ValueError(
-                'Large dataframe (>50 rows) and config.large_ok not set to true...do you know what you are doing?')
+                f'Large dataframe (>{self.config.large_warning} rows) and config.large_ok not set to true. '
+                'Set large_ok=True or increase value of large_warning.')
 
         if not df.columns.is_unique:
             raise ValueError('df column names are not unique')
@@ -1707,7 +1708,7 @@ class GT(object):
         matrix_name = self.df_id
 
         # column and tikz display widths
-        colw = self.tex_knowledge_df['tikz_colw'].map(lambda x: np.round(x, 3))
+        colw = self.tex_knowledge_df['tikz_colw'].fillna(0).round(3)
         tabs = self.tex_knowledge_df['recommended'].map(lambda x: np.round(x, 3))
         # these are indexed with pre-TeX mangling names
         # colw.index = df.columns
diff --git a/greater_tables/utilities.py b/greater_tables/utilities.py
index 72ff600..deaf623 100644
--- a/greater_tables/utilities.py
+++ b/greater_tables/utilities.py
@@ -774,6 +774,7 @@ class TextOutput:
             Formats a single cell, wrapping text and applying padding and alignment.
             Returns a list of strings, each representing a line of the cell.
             """
+            width = int(width)
             lines = wrap(str(text), width=width) or [""]
             padded_width = width + 2 * fmt.padding
             return [
@@ -798,7 +799,14 @@ class TextOutput:
                     parts.append(line_fmt.index_sep)
                 elif i > 0:
                     parts.append(line_fmt.sep)
-                parts.append(line_fmt.hline * total)
+                try:
+                    parts.append(line_fmt.hline * int(total))
+                except:
+                    # print('ERROR')
+                    # print(w, fmt.padding)
+                    # print(total, type(total))
+                    # print(line_fmt.hline)
+                    raise
             return f"{line_fmt.begin}{''.join(parts)}{line_fmt.end}"
 
         def _make_data_row(row_fmt: DataRow, line_cells: list[str]) -> str:
@@ -821,7 +829,7 @@ class TextOutput:
             """
             max_height = max(len(c) for c in wrapped_cells)
             padded_cells = [
-                [" " * (w + 2 * fmt.padding)] * (max_height - len(cell)) + cell
+                [" " * int(w + 2 * fmt.padding)] * (max_height - len(cell)) + cell
                 for cell, w in zip(wrapped_cells, level_widths)
             ]
             return [
@@ -860,7 +868,7 @@ class TextOutput:
             ]
             max_height = max(len(c) for c in data_cells)
             padded = [
-                c + [" " * (w + 2 * fmt.padding)] * (max_height - len(c))
+                c + [" " * int(w + 2 * fmt.padding)] * (max_height - len(c))
                 for c, w in zip(data_cells, data_col_widths)
             ]
             for i in range(max_height):