SuperMemo error: Element count at

From: Aran K.
Country:
Sent: Thursday, August 05, 2010 2:07 PM
Subject: SuperMemo error: Element count at #1 greater than element total

Question

Element count at #1 greater than element total
Descendants total: 13
Collection total: 4
Use File : Repair collection

--------------------DETAILS--------------------
SuperMemo 2006 (Build 13.16d, Sep 22, 2008)
Time: Aug 05, 2010, 08:06

--------------------SYSTEM DATA
Windows XP 5.1 (Build 2600) Service Pack 3
Internet Explorer 7.0 (0)
Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)
User language: English (US)
System language: English (US)
Browser language: English (US)
User: Administrator
Memory Used: 1.91 MB
Active Code Page: 1252
OEM Code Page: 437
Network installed

Answer

Make a backup of the collection and run File : Repair collection.

This error indicates errors in the contents tree. Each node contains the data such as the number of children and descendants. If this data contradicts other data in the collection, you know the collection has been damaged and needs repairs. In this case the node reports more descendants than there are elements in the collection (i.e. a situation that is not possible).

Don't forget to review the entire collection. Perhaps the file damage is more widespread, and this error only tells you that something went wrong with the data.