upgrading from 13.10 to 14.10 any issues with UDF's in 14.10

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upgrading from 13.10 to 14.10 any issues with UDF's in 14.10

We are getting ready to upgrade from 13.10 to 14.10 in the next months.  I was looking for any issues with UDF's in 14.10 after the upgrade.  Please let me know if you had any issues with your UDF's.  We plan on deploying ours again after the upgrade.  Thank you....