1min. v Tick data discrepancies?

[24hrclock@xxxxxxxxxxxxx]

I am playing with yesterday's NQ charts and found numerous data 
discrepancies between data shown on my 1-minute chart and data shown on my 
tick chart.

An easy example is the 8:40am 1-minute bar which shows a high of 1419.50 
while my tick chart shows nothing above 1419.00 for the whole day. There 
are a bunch of these discrepancies.

Data provider is E-Signal. I have pulled local data as well as loaded fresh.

Is this an E-Signal problem (and if so, why by changing time frames does 
the data changes)? MS problem (and if so, why or how does MS 'interpret' 
the same data incorrectly)? or ?

Whadupwitdis?

thanks,

24h