PSpice仿真出错

ERROR(ORPSIM-16053): Nesting level exceeded
*Analysis directives:
.TRAN  0 5ms 0
.OPTIONS ADVCONV
.PROBE64 V(alias(*)) I(alias(*)) W(alias(*)) D(alias(*)) NOISE(alias(*))
.INC "..SCHEMATIC1.net"
$
ERROR(ORPSIM-16053): Nesting level exceeded
**** RESUMING preamp.cir ****
.END
.TRAN  0 5ms 0
$
ERROR -- Only one .TRAN allowed per circuit
.OPTIONS ADVCONV
.PROBE64 V(alias(*)) I(alias(*)) W(alias(*)) D(alias(*)) NOISE(alias(*))
.INC "..SCHEMATIC1.net"

请教各位大神，不明白“Nesting level exceeded”是什么意思