i have a problem with the Gambas installation


[Marco@localhost Download]$ yum install gambas
Loading "installonlyn" plugin
You need to be root to perform this command.
[Marco@localhost Download]$ su
Password:
su: incorrect password
[Marco@localhost Download]$ su
Password:
[root@localhost Download]# yum install gambas
Loading "installonlyn" plugin
Setting up Install Process
Setting up repositories
livna [1/4]
livna 100% |=========================| 951 B 00:00
core [2/4]
core 1.1 kB 00:00
updates [3/4]
updates 100% |=========================| 951 B 00:00
extras [4/4]
extras 100% |=========================| 1.1 kB 00:00
Reading repository metadata in from local files
primary.xml.gz 100% |=========================| 350 kB 00:06
updates : ################################################## 1040/1040
Added 0 new packages, deleted 4 old in 1.06 seconds
primary.xml.gz 100% |=========================| 1.1 MB 00:28
extras : ################################################## 3221/3221
Added 107 new packages, deleted 54 old in 8.30 seconds
Parsing package install arguments
No Match for argument: gambas
Nothing to do
[root@localhost Download]# gambas
sizeof(CLASS) = 256 !
ERROR: #51: Bad archive: File exists
[root@localhost Download]#

Please show me the way to fix it
Thanks