VCD fails to load if it does not contain a $dumpvars section

[timp3289]

mdio.vcd.txt
Hovering over the traces, they say they are 0 samples long.

Warning: Don't know what to do with line b0 !
Warning: Don't know what to do with line b0 "
Warning: Don't know what to do with line b0 #
Warning: Don't know what to do with line b0 $
Warning: Don't know what to do with line x%
Warning: Don't know what to do with line x'
Warning: Don't know what to do with line x&
Warning: Don't know what to do with line b1 !
Warning: Don't know what to do with line 0%
Warning: Don't know what to do with line 0'
Warning: Don't know what to do with line b0 !
Warning: Don't know what to do with line b1 "
Warning: Don't know what to do with line b1 !
Warning: Don't know what to do with line z&
Warning: Don't know what to do with line b0 !
Warning: Don't know what to do with line b1 !
Warning: Don't know what to do with line b0 !
Warning: Don't know what to do with line b1 $
Warning: Don't know what to do with line b1 !
Warning: Don't know what to do with line 1&
Warning: Don't know what to do with line b0 !
Warning: Don't know what to do with line b1 !
Warning: Don't know what to do with line b0 !

[timp3289]

Expected something like this: