diff --git a/my/core/error.py b/my/core/error.py
index e0055ab..9f20af4 100644
--- a/my/core/error.py
+++ b/my/core/error.py
@@ -110,11 +110,13 @@ def test_sort_res_by() -> None:
 
 # todo proper typevar?
 from datetime import datetime
-def set_error_datetime(e: Exception, dt: datetime) -> None:
+def set_error_datetime(e: Exception, dt: Optional[datetime]) -> None:
+    if dt is None:
+        return
     e.args = e.args + (dt,)
     # todo not sure if should return new exception?
 
-def attach_dt(e: Exception, *, dt: datetime) -> Exception:
+def attach_dt(e: Exception, *, dt: Optional[datetime]) -> Exception:
     set_error_datetime(e, dt)
     return e
 
diff --git a/my/core/pandas.py b/my/core/pandas.py
index 9a0fda2..9a87c89 100644
--- a/my/core/pandas.py
+++ b/my/core/pandas.py
@@ -53,12 +53,15 @@ def check_dataframe(f: FuncT) -> FuncT:
 # todo doctor: could have a suggesion to wrap dataframes with it?? discover by return type?
 
 
+import traceback
 from typing import Dict, Any
 from .error import extract_error_datetime
-def error_to_row(e: Exception, *, dt_col: str='dt') -> Dict[str, Any]:
-    # TODO attach traceback?
+def error_to_row(e: Exception, *, dt_col: str='dt', tz=None) -> Dict[str, Any]:
     edt = extract_error_datetime(e)
+    if edt is not None and edt.tzinfo is None and tz is not None:
+        edt = edt.replace(tzinfo=tz)
+    estr = ''.join(traceback.format_exception(Exception, e, e.__traceback__))
     return {
-        'error': str(e),
+        'error': estr,
         dt_col : edt,
     }
diff --git a/my/orgmode.py b/my/orgmode.py
index a59dce3..f9ed265 100644
--- a/my/orgmode.py
+++ b/my/orgmode.py
@@ -34,11 +34,11 @@ def to_note(x: Org) -> OrgNote:
     try:
         # TODO(porg) not sure if created should ever throw... maybe warning/log?
         c = x.created
-        if c is not None and isinstance(c, date):
+        if isinstance(c, datetime):
+            created = c
+        else:
             # meh. not sure if should return date...
             created = None
-        else:
-            created = c
     except Exception as e:
         created = None
     return OrgNote(