'@sdjensen: Refreshing of a dataset that contains functions in the power query still doesn't work for me. Everything runs fine using Power BI Desktop but as soon as I publish to the Power BI Portal and try to refresh the data from there I get an error.

Below is an example of the power query that I am trying to run. Please excuse the lack of indentation as it seems to get removed after posting the comment.

/* Gets the transaction file data as a table by url */
let getTransByFileUrl = (sourceTransFileUrl as text) =>

let sourceTransWeb = Web.Contents(sourceTransFileUrl) in
let sourceTrans = try Csv.Document(sourceTransWeb, null, ",", null, 1252) in
if sourceTrans[HasError] then
#table(type table [],{})
else
let sourceTransWithHeaders = Table.PromoteHeaders(sourceTrans[Value]) in
Table.TransformColumnTypes(
sourceTransWithHeaders,
{
{"Account", type text},
{"Account Number", type text},
{"Transaction Date", type date},
{"Transaction Amount", type number},
{"Transaction Description", type text},
{"Transaction Code", type text}
}
) in

/* Combines all the transaction file data for all source transaction files as a table */
let getTransByTransFiles = (sourceTransFiles as list) =>

Table.Combine(
List.Transform(
sourceTransFiles, (sourceTransFile) => getTransByFileUrl(sourceTransFile)
)
) in

/* Generates a list of daily transaction file names starting from the specified start date with the specified folder and file name */
let getSourceTransFiles = (startDate, sourceTransFolderUrl, fileNameWithExt) =>

let dates =
List.Dates(startDate, Number.From(DateTime.LocalNow () ) - Number.From(startDate), #duration(1, 0, 0, 0)) in

List.Transform(
dates,
(date) =>
let fileUrl = sourceTransFolderUrl & Date.ToText(