Aggregate checks broke after upgrade (crashes server too)

[alj]

I had several aggregate checks like this:
grpsum('mygrp','srv.totalerrors','last','0')

After upgrade from 1.0.7 to 1.4.2 first i noticed my server was crashing instantly after start until I disabled all my grpsum items.

If i try to edit item it complains that syntax is incorrect because it doesn't like () in it. If i replace () with [] server doesn't crash anymore but item goes instantly into "unsupported" state (server doesn't crash anymore though).

so there are 2 problems most likely

1. UI does not accept () in key sintax for aggregate checks.
2. Server crashes for certain aggregate checks such as one listed above at the beginning of the message.

[Alexei]

Thanks for reporting this. Please use new syntax for the aggregate checks described in the latest manual.

[alj]

Thanks for reporting this. Please use new syntax for the aggregate checks described in the latest manual.

2 more problems with aggregate checks:

1. Tooltip which pops up when you press "select" on item editing form has old syntax.

2. grpavg["grp","net.if.in[eth1,bytes]","last","0"] produces data: 25142.32 at this very moment , however simple graph for it says [no data] and does not display anything.