test files is white

Hi,

I got 2 xymon servers. One is running version 4.2.3 (i'll call this server 'old') and the other running 4.3.0 beta3 (called 'new').
On the 'new' server, a client with same version is running and reports its status to both 'old' and 'new'.
Everything runs fine but the files test status is ever white on 'new', even if the test report errors. On 'old' the status is OK and color changes when according results.

What can make this behaviour ?