hi LazyBadger.
Your options of blocks have a style of XOOPS 2.0.9.1
Perhaps some files origined from 2.0.9.1 are still alive by missing over-writing.
The right "options" fields are like this:
+--------------------+
| options |
+--------------------+
| xhld0|1|128|A |
| xhld0|10|128|2 |
+--------------------+
There are no serialization.