algorithmic modeling for Rhino

So, i'm a student currently studying rhino and grasshopper and at my school we have Rhino 5.0 and yesterday i saved my file so i could open it in 4.0.

Today, when i tried to open it, i got this: IO Write error: Unknown data type encountered.

I really need my file to be open in version 4.0 for a school project and if i could get some help it would be amazing, thanks for your comprehension and accepting me on this community.

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Can you upload the 5.0 and 4.0 files here? So few of us have Rhino 4 that I'm not sure many can help.

Is there any Grasshopper file or just a Rhino file?

You can also ask on the less web friendly Rhino forum:

Your attachment isn't browser readable, but contains:

<!-- <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<TITLE>Grasshopper Archive messages</TITLE>

<P><FONT COLOR="#000080"><H3>
Grasshopper Event Log

<P><FONT COLOR="#000000"><FONT SIZE=3 STYLE="font-size: 12pt">
This document contains the messages that were recorded during the most recent Grasshopper® file read/write.
Whenever a read/write operation fails or behaves unexpectedly, this summary will be compiled and put on display.
If you experience problems saving or opening files, please include this log with any bug-report you file.
You can use the Send... button to mail this report directly, or you can save the log and attach it to a personal email message.
This log contains no personal information beyond what you supply, nor any other information that is not directly related to Grasshopper.

<FONT SIZE=3 STYLE="font-size: 10pt"><I><A HREF=" Grasshopper IO report." TARGET="_blank">
Developer contact

Message log start (chronological):
<P STYLE="background: #be0028"> <FONT COLOR="#ffdcdc"><FONT SIZE=3 STYLE="font-size: 10pt">
IO Write error: Unknown data type encountered.

Hello! Could you fix this? I'm having the same problem.

You must use autosave in the cloud or save data locally. I recently wrote a dissertation and did not save the statistical data. It was a failure. I decided to buy a dissertation here I will never use several open processes at the same time. My computer simply refused to accept and store information






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