This problem seems to be a duplicate of one submitted a few months ago but I saw resolution posted. https://www.knime.com/forum/knime-general/problem-with-the-file-reader-node-when-using-workflow-variables I attached a simple workflow that creates a variable with a filename. When I try to use it in the Filereader node, I get the error “Errors loading flow variables into node : Coding issue: Cannot create URL of data file from ‘C:\Users\scott.mcleod\Documents\Knime Data Files\Sample2.csv’ in filereader config”. What may contribute to the issue is that I used the “Preserve user settings” when configuring the node so the column data types don’t change from run to run. That was a needed step because when my file had USA Postal Codes it decided that column was integer. but when I read a file of Canada postal codes, it changed data type to String. I includes a simple 3 node example of the issue. The attached CSV has a single record in it that the sample workflow is unable to read. Sample FileReader.knwf (9.5 KB) Sample2.zip (230 Bytes)

File reader Node Not Working With Flow Variables

MH June 20, 2018, 2:25pm 2

Does this solve your problem: