Hello Euduardo,
This type of problem SAPLOGF05 program error comes in the upgrade period.
I think your upgrade has some problems (Not Sure).
Please implement the SAP NOTE : 1723158 BCD Overflow if this is compatible for your system.
Your problem will resolve.
or
please please check SPAM queue / ALOG / SLOG and ULOG.
Did you get anywhere XPRA_EXECUTION Import error ?
Please paste the log file here for more analysis.
Also are you able to close the client the through SCC4 ?
Regards
Pranay