Compress not working with text to image

[sky_1]

When I use the first command below, hi is in the image file xaab.tif. But when I add "-compress Group4" in the second command below, I got white image with no word hi in it. There is no error with the second command. Any idea? The version is Version: ImageMagick 6.7.8-9 running on Linux 7.5

convert -size 1133x550 -font Courier-Bold -pointsize 60 -gravity Center caption:'hi' xaab.tif

convert -size 1133x550 -font Courier-Bold -pointsize 60 -gravity Center -compress Group4 caption:'hi test' xaab.tif

[snibgo]

It works fine with v6.9.9-50. Your version is very old. I suggest you upgrade.

[sky_1]

I will try it out. Thank you!