[plt-scheme] Error running plt-scheme on Fedora Linux (error invoking tool and cannot delete files).

Good Evening to Everybody !!!

I am from Brazil and I need some help to understand a strange error
that has just appear on my DrScheme installed on a Fedora 7 LInux
(plt-scheme package, rpm).

I used DrScheme on Fedora 6 and never saw something like this before
on others. Though the DrScheme seems to be working fine. The error
appears at the startup of the program.

Thanks in advance for any help.

Error invoking tool #<path:/usr/lib/plt/collects/profj>;("tool.ss")

delete-file: cannot delete file:
"/usr/lib/plt/collects/profj/libs/java/lang/compiled/NoSuchFieldException.jinfo"
(Permission denied; errno=13)

 === context ===
/usr/lib/plt/collects/profj/libs/java/lang/compile-lang.ss:102:2:
compile-exceptions
/usr/lib/plt/collects/drscheme/private/tools.ss:164:8
/usr/lib/plt/collects/drscheme/private/tools.ss:65:2:
load/invoke-all-tools/collections

Error invoking tool #<path:/usr/lib/plt/collects/profj>;("test-tool.ss")

delete-file: cannot delete file:
"/usr/lib/plt/collects/profj/libs/java/lang/compiled/NoSuchFieldException.jinfo"
(Permission denied; errno=13)

 === context ===
/usr/lib/plt/collects/profj/libs/java/lang/compile-lang.ss:102:2:
compile-exceptions
/usr/lib/plt/collects/drscheme/private/tools.ss:164:8
/usr/lib/plt/collects/drscheme/private/tools.ss:65:2:
load/invoke-all-tools/collections



-- 
Klaus Engelmann
CCNA - CSCO10971632