Pivot charts suddenly dissapearing and crashing Excel 2010

[djdiplomat]

I have a number of reports with pivot charts that have worked happily since they were created but suddenly when the charts are filtered with the slicers, some of the charts disappear, others do not update then Excel crashes with this error:

Problem signature:
Problem Event Name: APPCRASH
Application Name: EXCEL.EXE
Application Version: 14.0.7104.5000
Application Timestamp: 51cdffef
Fault Module Name: oart.dll
Fault Module Version: 14.0.7104.5000
Fault Module Timestamp: 51ce1551
Exception Code: c0000005
Exception Offset: 00278ff8
OS Version: 6.1.7601.2.1.0.256.4
Locale ID: 2057

Additional information about the problem:
LCID: 1033
skulcid: 1033

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The pivot tables containing the chart data update as they should when the charts are removed. Has anyone else seen this error?

Thanks

Will