Unplanned
Last Updated: 26 Nov 2025 12:41 by ADMIN
Mandip Kaila
Created on: 10 Jun 2022 10:00
Category: SpreadProcessing
Type: Bug Report
2
SpreadProcessing: ArgumentException thrown when file contains format string with modificator [Color]
Opening a file where there is a format string with modificator [Color11] causes an ArgumentException "Invalid modificator" This prevents the file from opening.
4 comments
ADMIN
Yoan
Posted on: 26 Nov 2025 12:41

Hello Bert,

Thank you for the provided document. I was able to use it in order to reproduce the same results on my end. After examining the results, I can confirm that the core reason for the exception you are experiencing is the same as the one reported in this thread.

This is why I’ve included the provided file in the set of resources to support the investigation, testing, troubleshooting, and eventual development work for this task once it begins.

That said, if you are interested in this task, please know that you can subscribe to it through the "Follow" button in order to track its progress by receiving notifications about potential status updates in the future.

Your cooperation is very much appreciated.

Regards,
Yoan
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Bert
Posted on: 25 Nov 2025 17:00

Hello, As requested I hereby post an excel file (xlsx, zipped) that produces the same error (exception) we get. I hope this will help in finding a solution.

Attached Files:
ADMIN
Yoan
Posted on: 25 Nov 2025 14:56

Hello Bert,

Thank you for reaching out.

I am sorry to hear that you are experiencing unexpected setbacks. It will be much appreciated if you could share with us the document you are using on your end to achieve the same results. This way, we can test and examine it, in order to get more context on the exact scenario you are experiencing. This will also help us confirm if that is indeed caused by the same issue.

If you are willing to provide a sample file, please know that this is a public thread and anything attached here will be publicly accessible. If you have any concerns, please feel free to open a private support ticket on this topic and attach the document there.

Thank you in advance.

Regards,
Yoan
Progress Telerik

Love the Telerik and Kendo UI products and believe more people should try them? Invite a fellow developer to become a Progress customer and each of you can get a $50 Amazon gift voucher.

Bert
Posted on: 25 Nov 2025 11:58

We get the same exception when opening a file containing a cell with a number value and a custom format [$-en-NL,1]dd-mm-yyyy;@.

Importing the same file using SpreadStreamProcessing works fine.