I have been working with the free version and the following code for inserting content into a table cell worked nicely:
var table = GetTableByTitle(title);
var allTables = _document.GetChildNodes(NodeType.Table, true);
var tableIndex = allTables.IndexOf(table);
…
var builder = new DocumentBuilder(_document);
builder.MoveToCell(tableIndex, currentRow, currentColumn, 0);
tableIndex would come back with value of 3.
After applying the trial license, this index changes to 7. I can still verify that it is the correct table, as it has the correct title associated with it, but now the MoveToCell call fails with:
Specified argument was out of the range of valid values.
Parameter name: tableIndex
This error happens even when the index changes.